{"id":9811,"date":"2026-05-27T02:21:06","date_gmt":"2026-05-27T02:21:06","guid":{"rendered":"https:\/\/ntgdvalve.com\/?p=9811"},"modified":"2026-05-27T02:21:06","modified_gmt":"2026-05-27T02:21:06","slug":"ball-valve-parts","status":"publish","type":"post","link":"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/","title":{"rendered":"\u0427\u0430\u0441\u0442\u0438 \u0438 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b \u0448\u0430\u0440\u043e\u0432\u044b\u0445 \u043a\u0440\u0430\u043d\u043e\u0432: \u041a\u043e\u0440\u043f\u0443\u0441, \u0448\u0430\u0440, \u0441\u0435\u0434\u043b\u043e, \u0448\u0442\u043e\u043a, \u0441\u0430\u043b\u044c\u043d\u0438\u043a \u0438 \u0442\u043e\u0440\u0446\u0435\u0432\u044b\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #0a0a0a;color:#0a0a0a\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #0a0a0a;color:#0a0a0a\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#What_Are_the_Main_Ball_Valve_Parts\" >What Are the Main Ball Valve Parts?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Ball_Valve_Parts_vs_Components_vs_Replacement_Parts\" >Ball Valve Parts vs Components vs Replacement Parts<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Ball_Valve_Parts_Diagram_How_to_Read_the_Main_Components\" >Ball Valve Parts Diagram: How to Read the Main Components<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#What_Should_Be_Labeled_in_a_Ball_Valve_Parts_Diagram\" >What Should Be Labeled in a Ball Valve Parts Diagram?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Parts_Diagram_vs_Symbol_vs_3-Way_Flow_Diagram\" >Parts Diagram vs Symbol vs 3-Way Flow Diagram<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Main_Ball_Valve_Components_and_Their_Functions\" >Main Ball Valve Components and Their Functions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Core_Ball_Valve_Parts_Explained\" >Core Ball Valve Parts Explained<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Valve_Body_Housing\" >Valve Body \/ Housing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Ball_Rotary_Ball_and_Bore\" >Ball \/ Rotary Ball and Bore<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Seats_and_Sealing_Surfaces\" >Seats and Sealing Surfaces<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Stem_Shaft\" >Stem \/ Shaft<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Packing_O-Rings_and_Seals\" >Packing, O-Rings and Seals<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Bonnet_Gland_and_Thrust_Washer\" >Bonnet, Gland and Thrust Washer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Handle_Gearbox_or_Actuator\" >Handle, Gearbox or Actuator<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#End_Connections_and_Ports\" >End Connections and Ports<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#How_Ball_Valve_Parts_Work_Together_During_Opening_and_Closing\" >How Ball Valve Parts Work Together During Opening and Closing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Sealing_and_Component_Concerns_Buyers_Should_Review\" >Sealing and Component Concerns Buyers Should Review<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#How_Design_Variations_Change_Ball_Valve_Component_Layout\" >How Design Variations Change Ball Valve Component Layout<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#One-Piece_Two-Piece_and_Three-Piece_Body_Designs\" >One-Piece, Two-Piece and Three-Piece Body Designs<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Floating_and_Trunnion_Ball_Support\" >Floating and Trunnion Ball Support<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Full_Port_Reduced_Port_and_V-Port_Balls\" >Full Port, Reduced Port and V-Port Balls<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Manual_Gear-Operated_and_Actuated_Ball_Valves\" >Manual, Gear-Operated and Actuated Ball Valves<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Ball_Valve_Parts_Checklist_for_RFQ_and_Specification_Review\" >Ball Valve Parts Checklist for RFQ and Specification Review<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#FAQ\" >FAQ<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#What_are_the_parts_of_a_ball_valve_and_what_are_their_names\" >What are the parts of a ball valve, and what are their names?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#What_are_the_components_of_a_ball_valve\" >What are the components of a ball valve?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#What_are_the_five_main_parts_of_a_valve\" >What are the five main parts of a valve?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#What_connects_to_a_ball_valve\" >What connects to a ball valve?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#How_is_the_internal_construction_of_a_ball_valve\" >How is the internal construction of a ball valve?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#How_does_a_ball_valve_operate\" >How does a ball valve operate?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Which_way_is_off_on_a_ball_valve\" >Which way is off on a ball valve?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Is_a_ball_valve_parts_diagram_the_same_as_a_ball_valve_symbol\" >Is a ball valve parts diagram the same as a ball valve symbol?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Is_a_3-way_ball_valve_diagram_different_from_a_standard_ball_valve_diagram\" >Is a 3-way ball valve diagram different from a standard ball valve diagram?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Is_a_ball_valve_parts_diagram_the_same_as_a_replacement_parts_list\" >Is a ball valve parts diagram the same as a replacement parts list?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Which_ball_valve_parts_commonly_affect_leakage_or_torque\" >Which ball valve parts commonly affect leakage or torque?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Conclusion\" >Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/ntgdvalve.com\/ru\/ball-valve-parts\/#Application_Specification_Support\" >Application \/ Specification Support<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_Are_the_Main_Ball_Valve_Parts\"><\/span>What Are the Main Ball Valve Parts?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The main <strong>ball valve parts<\/strong> include the valve body, rotary ball, bore or port, seats, stem, packing, O-rings or seals, bonnet or gland components, handle or actuator, and end connections. These <strong>ball valve components<\/strong> work together to contain pressure, control the flow path, create shutoff, transfer operating torque, and connect the valve to the pipeline.<\/p>\n<p>In this article, the phrase <strong>parts of a ball valve<\/strong> refers to the structural and functional components used in industrial valve construction. It does not refer to a replacement parts catalog, repair kit list, accessory page, or spare-parts shopping guide.<\/p>\n<p>For an industrial buyer or engineer, the useful question is not only \u201cwhat are the parts called?\u201d A better question is: <strong>which parts affect pressure boundary, shutoff performance, torque, leakage risk, material compatibility, end connection, actuation method, and RFQ review?<\/strong><\/p>\n<p>A ball valve is a quarter-turn valve. The ball has a hole through its center. When the hole aligns with the pipeline, flow can pass through. When the ball rotates about 90 degrees and the hole turns away from the flow path, the valve closes. This simple movement depends on several parts working correctly: the body contains pressure, the seats seal around the ball, the stem transfers torque, and the packing or seals help prevent leakage around the stem area.<\/p>\n<figure id=\"attachment_9815\" aria-describedby=\"caption-attachment-9815\" style=\"width: 1672px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-9815\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-components-labeled-cutaway-diagram.png\" alt=\"Labeled ball valve parts diagram showing body, ball, bore, seat, stem, packing, O-ring seal and end connection\" width=\"1672\" height=\"941\" srcset=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-components-labeled-cutaway-diagram.png 1672w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-components-labeled-cutaway-diagram-768x432.png 768w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-components-labeled-cutaway-diagram-1536x864.png 1536w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-components-labeled-cutaway-diagram-18x10.png 18w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-components-labeled-cutaway-diagram-600x338.png 600w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><figcaption id=\"caption-attachment-9815\" class=\"wp-caption-text\">Labeled ball valve parts and components diagram for a standard two-way industrial ball valve.<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Ball_Valve_Parts_vs_Components_vs_Replacement_Parts\"><\/span>Ball Valve Parts vs Components vs Replacement Parts<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The terms \u201cparts\u201d and \u201ccomponents\u201d are often used together, but they can mean different things depending on the search intent. In a technical article, they usually refer to the main physical and functional elements of the valve. In maintenance or purchasing contexts, \u201creplacement parts\u201d may refer to spare items used after wear or damage.<\/p>\n<table>\n<thead>\n<tr>\n<th>Term<\/th>\n<th>Does This Article Cover It?<\/th>\n<th>Typical Examples<\/th>\n<th>How It Is Treated Here<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Structural \/ functional ball valve parts<\/td>\n<td>Yes<\/td>\n<td>body, ball, seat, stem, packing, end connections<\/td>\n<td>Core topic<\/td>\n<\/tr>\n<tr>\n<td>Ball valve components<\/td>\n<td>Yes<\/td>\n<td>pressure boundary, sealing system, operating system, connection components<\/td>\n<td>Core topic<\/td>\n<\/tr>\n<tr>\n<td>Replacement parts \/ repair kits<\/td>\n<td>No<\/td>\n<td>seat kits, stem seal kits, repair kits, replacement handles<\/td>\n<td>Mentioned only as a boundary<\/td>\n<\/tr>\n<tr>\n<td>Accessories<\/td>\n<td>No<\/td>\n<td>stem extensions, locking devices, insulation covers, brackets<\/td>\n<td>Not a main topic<\/td>\n<\/tr>\n<tr>\n<td>Product-specific parts<\/td>\n<td>Light mention only<\/td>\n<td>3-piece ball valve parts, trunnion ball valve parts<\/td>\n<td>Routed to specific product or topic pages<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>For this page, \u201cball valve parts\u201d means the main components that explain how the valve is built and how it works in service. It does not mean a list of spare parts for purchase.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Ball_Valve_Parts_Diagram_How_to_Read_the_Main_Components\"><\/span>Ball Valve Parts Diagram: How to Read the Main Components<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A useful ball valve parts diagram should help readers understand the <strong>ball valve internals<\/strong>, including the ball, seats, stem, packing, seals, and flow path. For industrial use, a diagram is most valuable when it shows the relationship between the pressure boundary, the sealing surfaces, the operating stem, and the pipeline connection.<\/p>\n<p>&nbsp;<\/p>\n<p>A standard two-way industrial ball valve diagram should normally identify:<\/p>\n<ul>\n<li>valve body or housing;<\/li>\n<li>rotary ball;<\/li>\n<li>bore or port through the ball;<\/li>\n<li>upstream and downstream seats;<\/li>\n<li>stem or shaft;<\/li>\n<li>packing, O-rings, or stem seals;<\/li>\n<li>bonnet, gland, or packing gland where applicable;<\/li>\n<li>handle, gearbox, or actuator interface;<\/li>\n<li>end connections such as flanged, threaded, welded, or socket-weld ends.<\/li>\n<\/ul>\n<p>Not every ball valve uses the same bonnet, gland, or packing arrangement. The exact terminology depends on the body design, pressure class, manufacturer drawing, and service requirement. For this reason, a diagram should be read together with the datasheet or sectional drawing, not only as a generic illustration.<\/p>\n<figure id=\"attachment_9819\" aria-describedby=\"caption-attachment-9819\" style=\"width: 1672px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-9819\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-internals-cutaway-body-ball-seat-stem-packing.png\" alt=\"Ball valve internals cutaway showing body, ball, bore, seat, stem, packing and seal\" width=\"1672\" height=\"941\" srcset=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-internals-cutaway-body-ball-seat-stem-packing.png 1672w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-internals-cutaway-body-ball-seat-stem-packing-768x432.png 768w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-internals-cutaway-body-ball-seat-stem-packing-1536x864.png 1536w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-internals-cutaway-body-ball-seat-stem-packing-18x10.png 18w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-internals-cutaway-body-ball-seat-stem-packing-600x338.png 600w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><figcaption id=\"caption-attachment-9819\" class=\"wp-caption-text\">Ball valve internals cutaway showing the internal structure and flow path.<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"What_Should_Be_Labeled_in_a_Ball_Valve_Parts_Diagram\"><\/span>What Should Be Labeled in a Ball Valve Parts Diagram?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The most important labels are the body, ball, bore, seat, stem, packing or seal area, operating device, and end connections. If the diagram is a cutaway view, it should also show how the ball sits between the seats and how the stem connects the external handle or actuator to the ball.<\/p>\n<p>For a B2B specification review, the diagram should help the reader answer practical questions:<\/p>\n<ul>\n<li>Which part contains pressure?<\/li>\n<li>Which parts create shutoff?<\/li>\n<li>Which part transfers operating torque?<\/li>\n<li>Which parts may affect external leakage?<\/li>\n<li>Which connection type must match the pipeline?<\/li>\n<li>Which parts change when the valve is floating, trunnion-mounted, full port, reduced port, V-port, or actuated?<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Parts_Diagram_vs_Symbol_vs_3-Way_Flow_Diagram\"><\/span>Parts Diagram vs Symbol vs 3-Way Flow Diagram<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A parts diagram shows valve construction.<br \/>\nA P&amp;ID symbol shows how a valve is represented in a process or piping diagram.<br \/>\nA 3-way flow diagram shows port routing.<\/p>\n<p>A standard ball valve parts diagram is not the same as a ball valve symbol. It is also not the same as a 3-way L-port or T-port flow pattern diagram. L-port, T-port, and other multi-port flow patterns should be reviewed under a 3-way ball valve topic, not under a general ball valve parts guide.<\/p>\n<p>For multi-port routing details, use a dedicated <a href=\"https:\/\/ntgdvalve.com\/3-way-ball-valve\/\">3-way ball valve guide<\/a> instead of trying to interpret L-port or T-port flow patterns from a standard two-way parts diagram.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Main_Ball_Valve_Components_and_Their_Functions\"><\/span>Main Ball Valve Components and Their Functions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The table below summarizes the main ball valve parts and function of each component. The exact design may vary by valve type, pressure class, material, manufacturer, and project specification.<\/p>\n<table>\n<thead>\n<tr>\n<th>Component<\/th>\n<th>Function<\/th>\n<th>Where It Sits<\/th>\n<th>Why It Matters<\/th>\n<th>Buyer Check<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Valve body \/ housing<\/td>\n<td>Contains pressure and holds internal parts<\/td>\n<td>Outer shell of the valve<\/td>\n<td>Defines pressure boundary, material compatibility, and valve construction<\/td>\n<td>Confirm body material, size, pressure class, temperature range, and end connection<\/td>\n<\/tr>\n<tr>\n<td>Ball \/ rotary ball<\/td>\n<td>Opens or blocks the flow path<\/td>\n<td>Inside the body, between the seats<\/td>\n<td>Controls on\/off flow through the bore<\/td>\n<td>Confirm ball material, coating, surface finish, and port type<\/td>\n<\/tr>\n<tr>\n<td>Bore \/ port<\/td>\n<td>Passage through the ball<\/td>\n<td>Through the center of the ball<\/td>\n<td>Affects flow opening and pressure-drop tendency<\/td>\n<td>Confirm full port, reduced port, V-port, or special port requirement<\/td>\n<\/tr>\n<tr>\n<td>Seats<\/td>\n<td>Support and seal around the ball<\/td>\n<td>Around the ball on upstream and downstream sides<\/td>\n<td>Main shutoff interface and torque influence point<\/td>\n<td>Confirm seat material, service temperature, media compatibility, and shutoff requirement<\/td>\n<\/tr>\n<tr>\n<td>Stem \/ shaft<\/td>\n<td>Transfers torque from operator to ball<\/td>\n<td>Between operator and ball<\/td>\n<td>Controls ball rotation and affects actuation reliability<\/td>\n<td>Confirm stem design, torque requirement, stem retention, and anti-blowout requirement if specified<\/td>\n<\/tr>\n<tr>\n<td>Packing<\/td>\n<td>Seals around the stem area<\/td>\n<td>Around the stem, usually near the gland area<\/td>\n<td>Helps prevent external leakage around the rotating stem<\/td>\n<td>Confirm packing material, temperature range, pressure condition, and emissions-sensitive requirements<\/td>\n<\/tr>\n<tr>\n<td>O-rings \/ seals<\/td>\n<td>Seal body joints and other leakage paths<\/td>\n<td>Around joints, stem area, or body connections depending on design<\/td>\n<td>Supports sealing integrity and media compatibility<\/td>\n<td>Confirm elastomer or seal material against media, pressure, and temperature<\/td>\n<\/tr>\n<tr>\n<td>Bonnet \/ gland \/ packing gland<\/td>\n<td>Supports stem sealing and assembly access<\/td>\n<td>Around upper body or stem area, depending on design<\/td>\n<td>Affects packing compression, maintenance access, and stem support<\/td>\n<td>Confirm construction type, access method, and packing adjustment or replacement requirement<\/td>\n<\/tr>\n<tr>\n<td>Handle \/ gearbox \/ actuator<\/td>\n<td>Provides operating force<\/td>\n<td>Outside the valve body<\/td>\n<td>Determines manual or automated operation<\/td>\n<td>Confirm lever, gear, pneumatic, electric, or hydraulic operation and torque margin<\/td>\n<\/tr>\n<tr>\n<td>End connections \/ ports<\/td>\n<td>Connect valve to pipeline<\/td>\n<td>Valve ends<\/td>\n<td>Determines pipeline fit and installation method<\/td>\n<td>Confirm flange standard, thread type, weld end, size, pressure class, and installation method<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure id=\"attachment_9814\" aria-describedby=\"caption-attachment-9814\" style=\"width: 1672px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-9814\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-components-exploded-layout-body-ball-seat-stem.png\" alt=\"Exploded ball valve components layout showing body, ball, seats, stem, packing, seals and end connections\" width=\"1672\" height=\"941\" srcset=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-components-exploded-layout-body-ball-seat-stem.png 1672w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-components-exploded-layout-body-ball-seat-stem-768x432.png 768w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-components-exploded-layout-body-ball-seat-stem-1536x864.png 1536w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-components-exploded-layout-body-ball-seat-stem-18x10.png 18w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-components-exploded-layout-body-ball-seat-stem-600x338.png 600w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><figcaption id=\"caption-attachment-9814\" class=\"wp-caption-text\">Exploded layout of the main ball valve components and assembly relationship.<\/figcaption><\/figure>\n<p>This table should be used as a specification review tool, not just a vocabulary list.<\/p>\n<p>For general valve terminology, the <a href=\"https:\/\/engineeringlibrary.org\/reference\/valves-doe-handbook\" target=\"_blank\" rel=\"noopener\">DOE valve handbook<\/a> is a useful neutral reference because it explains common valve parts such as the body, bonnet, trim, actuator, and packing.<\/p>\n<p>Each component connects to a real engineering question: pressure containment, shutoff, leakage, torque, material compatibility, or installation fit.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Core_Ball_Valve_Parts_Explained\"><\/span>Core Ball Valve Parts Explained<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_9813\" aria-describedby=\"caption-attachment-9813\" style=\"width: 2560px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9813\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-flanged-workshop-assembly-scaled.jpg\" alt=\"24x20 600LB flanged ball valve during workshop assembly\" width=\"2560\" height=\"1707\" srcset=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-flanged-workshop-assembly-scaled.jpg 2560w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-flanged-workshop-assembly-768x512.jpg 768w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-flanged-workshop-assembly-1536x1024.jpg 1536w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-flanged-workshop-assembly-2048x1365.jpg 2048w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-flanged-workshop-assembly-18x12.jpg 18w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-flanged-workshop-assembly-600x400.jpg 600w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><figcaption id=\"caption-attachment-9813\" class=\"wp-caption-text\">24\u00d720 600LB flanged ball valve during workshop assembly and inspection.<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Valve_Body_Housing\"><\/span>Valve Body \/ Housing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The valve body is the main pressure-containing structure of a ball valve. It houses the ball, seats, stem passage, and sealing elements. It also provides the connection interface to the pipeline.<\/p>\n<p>In industrial service, the body is not just an outer shell. It affects material compatibility, installation method, pressure boundary, temperature suitability, and maintenance access. A carbon steel, stainless steel, alloy, forged, or cast body may be selected for different services, but the choice must be checked against media, pressure, temperature, end connection, and project specification.<\/p>\n<p>The body design also affects how the valve is assembled. One-piece, two-piece, and three-piece ball valves arrange the body and end connections differently. A general ball valve parts article should mention this difference, but detailed body construction comparison belongs to a dedicated design or product-specific page.<\/p>\n<figure id=\"attachment_9812\" aria-describedby=\"caption-attachment-9812\" style=\"width: 2560px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9812\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-ball-installation-workshop-assembly-scaled.jpg\" alt=\"24x20 600LB ball valve ball installation during workshop assembly\" width=\"2560\" height=\"1707\" srcset=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-ball-installation-workshop-assembly-scaled.jpg 2560w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-ball-installation-workshop-assembly-768x512.jpg 768w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-ball-installation-workshop-assembly-1536x1024.jpg 1536w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-ball-installation-workshop-assembly-2048x1365.jpg 2048w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-ball-installation-workshop-assembly-18x12.jpg 18w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-ball-installation-workshop-assembly-600x400.jpg 600w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><figcaption id=\"caption-attachment-9812\" class=\"wp-caption-text\">Technicians installing the ball into a 24\u00d720 600LB ball valve body during workshop assembly.<\/figcaption><\/figure>\n<h3><span class=\"ez-toc-section\" id=\"Ball_Rotary_Ball_and_Bore\"><\/span>Ball \/ Rotary Ball and Bore<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The ball is the moving closure member inside the valve. It contains a bore, sometimes called a port. When the bore aligns with the pipeline, the valve is open. When the ball turns and the bore is perpendicular to the pipeline, the valve closes.<\/p>\n<p>The bore design affects flow behavior. A full port ball valve generally provides a larger flow opening relative to the pipeline size, while a reduced port design has a smaller flow opening and may have a higher pressure-drop tendency. A V-port ball has a shaped opening for more controlled flow response, but that is a special design and should not be treated as the default structure for all ball valves.<\/p>\n<p>If the application requires characterized flow rather than simple on\/off isolation, review the port geometry separately under a <a href=\"https:\/\/ntgdvalve.com\/what-are-v-port-ball-valves-and-how-do-they-improve-flow-control\/\">V-port ball valve<\/a> selection context.<\/p>\n<p>For specification review, the buyer should confirm whether the application requires full port, reduced port, or another port design. This decision should be reviewed together with flow requirement, allowable pressure drop, cleaning requirement, media condition, and valve design.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Seats_and_Sealing_Surfaces\"><\/span>Seats and Sealing Surfaces<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Seats are sealing elements positioned around the ball. They support the ball and help create shutoff when the valve is closed. In many ball valves, the seat material and seat design strongly influence shutoff performance, operating torque, temperature suitability, and media compatibility.<\/p>\n<p>Soft seats are often reviewed where tight shutoff is required and the media and temperature are compatible with the seat material. Metal seats may be reviewed for higher-temperature, abrasive, or more severe services where soft-seat materials may not be suitable. The correct choice depends on service condition and valve design, not on the word \u201cball valve\u201d alone.<\/p>\n<p>Avoid assuming that all ball valves are \u201cleak-proof.\u201d Shutoff performance must be verified against the valve design, seat material, applicable test requirement, and project specification.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Stem_Shaft\"><\/span>Stem \/ Shaft<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The stem connects the external operating device to the internal ball. When a handle, gearbox, or actuator turns the stem, the stem transmits torque to the ball and changes the valve position.<\/p>\n<p>A stem is small compared with the valve body, but it is critical to operation. If the stem design, packing arrangement, or actuator sizing is not suitable, the valve may require excessive torque, fail to fully open or close, or develop leakage around the stem area.<\/p>\n<p>Some industrial designs include anti-blowout stem features or specific stem retention designs. These details should be checked against the manufacturer\u2019s datasheet and project specification instead of assumed from a generic ball valve description.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Packing_O-Rings_and_Seals\"><\/span>Packing, O-Rings and Seals<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Packing and seals help control leakage around the stem and body joints. In a ball valve, the sealing system is not limited to the seats. Stem packing, O-rings, body seals, gasket areas, and backup rings may all be relevant depending on the design.<\/p>\n<p>During operation, the stem rotates inside or through the packing area. Over repeated cycles, the relationship between stem surface, packing compression, temperature, pressure, and media compatibility can affect sealing performance and operating torque.<\/p>\n<p>Packing material should be reviewed together with temperature, pressure, media, operating frequency, and any emissions-sensitive service requirement. O-rings or elastomeric seals must also be compatible with the fluid and temperature range. A seal that works in clean water service may not be suitable for aggressive chemicals, high temperature, or certain oil and gas applications.<\/p>\n<p>This is why a ball valve component review should not stop at \u201cbody, ball, stem, and seat.\u201d For industrial applications, the smaller sealing parts often determine whether the valve remains suitable in real service.<\/p>\n<p>If leakage, hard operation, or seal wear is already present in service, review those symptoms through a dedicated <a href=\"https:\/\/ntgdvalve.com\/how-to-maintain-and-troubleshoot-ball-valves-for-longevity\/\">ball valve maintenance guide<\/a> rather than treating this parts list as a repair procedure.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Bonnet_Gland_and_Thrust_Washer\"><\/span>Bonnet, Gland and Thrust Washer<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Some ball valve designs include a bonnet, gland, gland nut, thrust washer, or similar support components around the stem and packing area. The naming and arrangement vary by valve design.<\/p>\n<p>These parts help support the stem, compress packing, control axial movement, or provide assembly access. They may not always be visible from outside the valve, but they can affect stem sealing, maintenance access, packing adjustment, and operating feel.<\/p>\n<p>For selection review, the buyer should not treat these parts as minor details when the application involves frequent operation, higher torque, pressure cycling, or strict external leakage control. Detailed dimensions, torque values, and assembly instructions should come from the manufacturer\u2019s drawing or maintenance manual.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Handle_Gearbox_or_Actuator\"><\/span>Handle, Gearbox or Actuator<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The operating device turns the stem. Small manual ball valves often use a lever handle. Larger valves or higher torque applications may use a gearbox. Automated valves may use pneumatic, electric, or hydraulic actuators.<\/p>\n<p>The operator is part of the functional valve assembly, but it should not turn this article into an actuated ball valve guide. The key point is that the operator must provide enough torque to rotate the ball under the specified pressure and service conditions.<\/p>\n<p>For an RFQ, the buyer should clarify whether the valve is manual, gear-operated, pneumatic, electric, or hydraulic. If automation is required, actuator sizing, fail position, control signal, and control accessories should be reviewed separately.<\/p>\n<p>For automated operation, torque margin, fail position, and control method should be reviewed in an <a href=\"https:\/\/ntgdvalve.com\/actuated-ball-valve\/\">actuated ball valve<\/a> context.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"End_Connections_and_Ports\"><\/span>End Connections and Ports<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>End connections determine how the valve connects to the pipeline. Common connection types include flanged, threaded, welded, and socket-weld ends. The correct connection depends on pipe design, pressure class, installation method, maintenance expectation, and project specification.<\/p>\n<p>End connections are often overlooked in basic \u201cparts of a ball valve\u201d explanations, but they are important in B2B procurement. A valve with the correct internal parts but the wrong connection type cannot be installed correctly.<\/p>\n<p>Ports should also be clarified. A standard two-way ball valve has an inlet and outlet. Multi-port valves, such as 3-way ball valves, use a different port arrangement and different flow-path logic. Those should be reviewed under a separate 3-way ball valve topic.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Ball_Valve_Parts_Work_Together_During_Opening_and_Closing\"><\/span>How Ball Valve Parts Work Together During Opening and Closing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Understanding the <strong>ball valve structure<\/strong> means seeing how the pressure boundary, sealing parts, and operating parts work together. A cutaway or open-closed diagram should show this interaction clearly, rather than only listing part names.<\/p>\n<p>A ball valve operates through a simple mechanical sequence:<\/p>\n<ol>\n<li>The handle, gearbox, or actuator applies torque.<\/li>\n<li>The torque turns the stem.<\/li>\n<li>The stem rotates the ball.<\/li>\n<li>The bore through the ball either aligns with the flow path or turns away from it.<\/li>\n<li>The seats seal around the ball.<\/li>\n<li>The packing and stem seals help prevent leakage around the rotating stem.<\/li>\n<\/ol>\n<figure id=\"attachment_9818\" aria-describedby=\"caption-attachment-9818\" style=\"width: 1672px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9818\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-open-closed-bore-aligned-bore-turned.png\" alt=\"Ball valve open and closed positions showing bore aligned and bore turned\" width=\"1672\" height=\"941\" srcset=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-open-closed-bore-aligned-bore-turned.png 1672w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-open-closed-bore-aligned-bore-turned-768x432.png 768w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-open-closed-bore-aligned-bore-turned-1536x864.png 1536w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-open-closed-bore-aligned-bore-turned-18x10.png 18w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-open-closed-bore-aligned-bore-turned-600x338.png 600w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><figcaption id=\"caption-attachment-9818\" class=\"wp-caption-text\">Open vs closed ball valve positions showing how bore alignment controls flow.<\/figcaption><\/figure>\n<p>This quarter-turn sequence is consistent with <a href=\"https:\/\/www.slb.com\/resource-library\/article\/valve-insights\/how-it-works-ball-valves\" target=\"_blank\" rel=\"noopener\">SLB\u2019s ball valve working principle overview<\/a>, which describes how a spherical closure with a bore provides on\/off control.<\/p>\n<p>The bore alignment controls the open or closed flow path. The seats create the shutoff boundary around the ball. The stem transfers torque from the external operator to the internal ball. The packing seals around the stem while still allowing rotation.<\/p>\n<p>In most manual lever-operated two-way ball valves, the handle parallel to the pipeline usually indicates the open position, while the handle perpendicular to the pipeline usually indicates the closed position. This convention should still be confirmed for special handles, automated valves, or site-specific operating arrangements.<\/p>\n<p>This short operating explanation is enough for a parts and components guide. A full working principle article would need deeper coverage of flow coefficient, pressure drop, actuation sequence, port geometry, and service conditions, which is outside the scope of this page.<\/p>\n<div class=\"ntgd-video-wrap\" style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%;\"><iframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" title=\"How Ball Valves Work\" src=\"https:\/\/www.youtube.com\/embed\/RvD1R8Tlr9M\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Sealing_and_Component_Concerns_Buyers_Should_Review\"><\/span>Sealing and Component Concerns Buyers Should Review<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A ball valve may look simple from outside, but the sealing system has several potential review points. Seat material, stem packing, body seals, ball surface finish, and operating torque all affect service performance.<\/p>\n<p>For broader component context, <a href=\"https:\/\/www.valvemagazine.com\/articles\/the-evolution-of-the-all-encompassing-ball-valve\" target=\"_blank\" rel=\"noopener\">Valve Magazine\u2019s ball valve design overview<\/a> also identifies the body, ball, seats, and stem as major ball valve components.<\/p>\n<figure id=\"attachment_9817\" aria-describedby=\"caption-attachment-9817\" style=\"width: 1672px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9817\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-sealing-system-seat-packing-o-ring-review.png\" alt=\"Ball valve sealing system showing seat seal, stem packing, O-ring seal and body joint review points\" width=\"1672\" height=\"941\" srcset=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-sealing-system-seat-packing-o-ring-review.png 1672w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-sealing-system-seat-packing-o-ring-review-768x432.png 768w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-sealing-system-seat-packing-o-ring-review-1536x864.png 1536w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-sealing-system-seat-packing-o-ring-review-18x10.png 18w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-sealing-system-seat-packing-o-ring-review-600x338.png 600w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><figcaption id=\"caption-attachment-9817\" class=\"wp-caption-text\">Ball valve sealing system review points, including seat seals, stem packing, O-rings and body joints.<\/figcaption><\/figure>\n<p>Incorrect seat, packing, or seal selection can lead to external leakage, internal leakage, excessive operating torque, premature wear, or unplanned maintenance.<\/p>\n<table>\n<thead>\n<tr>\n<th>Component Area<\/th>\n<th>Possible Concern<\/th>\n<th>What to Confirm Before Selection<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Seats<\/td>\n<td>Internal leakage, wear, high torque, temperature limitation<\/td>\n<td>Seat material, shutoff requirement, temperature, media, pressure<\/td>\n<\/tr>\n<tr>\n<td>Ball surface<\/td>\n<td>Seat wear, poor sealing, corrosion, coating damage<\/td>\n<td>Ball material, coating, surface finish, media compatibility<\/td>\n<\/tr>\n<tr>\n<td>Stem and packing<\/td>\n<td>External leakage, friction, high operating torque<\/td>\n<td>Packing material, stem design, cycle frequency, service temperature<\/td>\n<\/tr>\n<tr>\n<td>O-rings \/ body seals<\/td>\n<td>Swelling, hardening, chemical attack, joint leakage<\/td>\n<td>Elastomer compatibility, media, temperature, pressure<\/td>\n<\/tr>\n<tr>\n<td>Body joints<\/td>\n<td>Leakage at body connection or gasket area<\/td>\n<td>Body construction, gasket or seal design, maintenance access<\/td>\n<\/tr>\n<tr>\n<td>Actuator interface<\/td>\n<td>Incomplete opening \/ closing, torque mismatch<\/td>\n<td>Required torque, actuator type, operating condition<\/td>\n<\/tr>\n<tr>\n<td>End connections<\/td>\n<td>Installation mismatch or wrong pipe interface<\/td>\n<td>Flange standard, thread type, weld end, pipe specification<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>These concerns do not mean the valve is unreliable. They mean the buyer should match the valve construction to the application. The same component name can behave differently depending on design, material, pressure class, temperature, media, and operating frequency.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Design_Variations_Change_Ball_Valve_Component_Layout\"><\/span>How Design Variations Change Ball Valve Component Layout<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ball valves are not all built the same way. The main parts remain similar, but the layout and function of those parts can change across designs.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"One-Piece_Two-Piece_and_Three-Piece_Body_Designs\"><\/span>One-Piece, Two-Piece and Three-Piece Body Designs<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A one-piece ball valve has a simpler body construction. A two-piece valve has a body and one end piece. A three-piece ball valve has a center body section and two end caps or connectors. These body designs can affect maintenance access, assembly, leakage paths, and how easily internal parts can be serviced.<\/p>\n<p>Detailed body construction, maintenance access, and three-piece ball valve selection should be reviewed under a dedicated three-piece or body construction topic, not expanded inside this general parts guide.<\/p>\n<p>For removable center-body construction and service-access details, use the dedicated <a href=\"https:\/\/ntgdvalve.com\/three-piece-ball-valve\/\">three-piece ball valve<\/a> page rather than expanding that comparison inside this general components guide.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Floating_and_Trunnion_Ball_Support\"><\/span>Floating and Trunnion Ball Support<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>In a floating ball valve, the ball is supported mainly by the seats and can move slightly under pressure to help seal against the downstream seat. In a trunnion-mounted ball valve, the ball is mechanically supported by trunnions, and the seat arrangement works differently.<\/p>\n<p>This difference affects seat load, operating torque, large-size design, and high-pressure suitability. Detailed torque, seat load, and large-size design review should be handled in a trunnion ball valve or ball valve selection guide.<\/p>\n<p>For the support-design comparison, seat-load logic, and large-size selection boundary, review the <a href=\"https:\/\/ntgdvalve.com\/trunnion-ball-valve-vs-floating-ball-valve-key-differences-explained\/\">trunnion ball valve vs floating ball valve<\/a> guide.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Full_Port_Reduced_Port_and_V-Port_Balls\"><\/span>Full Port, Reduced Port and V-Port Balls<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The bore or port design changes the flow opening through the ball. Full port and reduced port valves are common shutoff configurations. V-port ball valves are special designs used where flow characterization or throttling review is needed.<\/p>\n<p>A general parts guide should mention that the ball is not always the same internally. However, V-port control behavior, special port geometry, and flow-characteristic review should be handled under a V-port ball valve or control ball valve topic.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Manual_Gear-Operated_and_Actuated_Ball_Valves\"><\/span>Manual, Gear-Operated and Actuated Ball Valves<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The operating component can also change the valve layout. A small valve may use a lever handle. A larger valve may need a gearbox. An automated valve may use a pneumatic or electric actuator.<\/p>\n<figure id=\"attachment_9821\" aria-describedby=\"caption-attachment-9821\" style=\"width: 2560px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9821\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-three-piece-dn500-pn25-a105-flanged-electric-actuated-scaled.jpg\" alt=\"DN500 PN25 A105 electric actuated three-piece ball valves\" width=\"2560\" height=\"1707\" srcset=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-three-piece-dn500-pn25-a105-flanged-electric-actuated-scaled.jpg 2560w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-three-piece-dn500-pn25-a105-flanged-electric-actuated-768x512.jpg 768w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-three-piece-dn500-pn25-a105-flanged-electric-actuated-1536x1024.jpg 1536w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-three-piece-dn500-pn25-a105-flanged-electric-actuated-2048x1365.jpg 2048w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-three-piece-dn500-pn25-a105-flanged-electric-actuated-18x12.jpg 18w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-three-piece-dn500-pn25-a105-flanged-electric-actuated-600x400.jpg 600w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><figcaption id=\"caption-attachment-9821\" class=\"wp-caption-text\">DN500 PN25 A105 electric actuated three-piece ball valves prepared in the workshop.<\/figcaption><\/figure>\n<p>The internal shutoff mechanism still depends on the ball, stem, seats, and seals, but the external operating assembly changes. Actuator sizing, control method, fail position, and automation layout should be reviewed in an actuated ball valve context.<\/p>\n<div class=\"ntgd-video-wrap\" style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%;\"><iframe style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" title=\"Pneumatic Trunnion Ball Valve 6 inch 150LB\" src=\"https:\/\/www.youtube.com\/embed\/fv-9JqwtC8c\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Ball_Valve_Parts_Checklist_for_RFQ_and_Specification_Review\"><\/span>Ball Valve Parts Checklist for RFQ and Specification Review<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A parts list is useful only when it helps the buyer prepare a clearer specification. Before requesting or reviewing a ball valve, confirm the information below.<\/p>\n<table>\n<thead>\n<tr>\n<th>RFQ Item<\/th>\n<th>Why It Matters<\/th>\n<th>Related Component<\/th>\n<th>What the Buyer Should Confirm<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Media<\/td>\n<td>Media compatibility affects body, seat, seal, and ball material<\/td>\n<td>body, ball, seats, seals<\/td>\n<td>Fluid type, solids, corrosiveness, viscosity, cleanliness<\/td>\n<\/tr>\n<tr>\n<td>Pressure<\/td>\n<td>Pressure affects body rating, seat load, sealing design, and torque<\/td>\n<td>body, seats, stem, seals<\/td>\n<td>Design pressure, operating pressure, pressure class<\/td>\n<\/tr>\n<tr>\n<td>Temperature<\/td>\n<td>Temperature limits seat, packing, O-ring, and body material choices<\/td>\n<td>body, seats, packing, O-rings<\/td>\n<td>Minimum, normal, and maximum operating temperature<\/td>\n<\/tr>\n<tr>\n<td>Size and pressure class<\/td>\n<td>Determines valve dimensions, wall thickness, flange rating, and pipeline fit<\/td>\n<td>body, end connections<\/td>\n<td>Nominal size, pressure class, applicable piping standard<\/td>\n<\/tr>\n<tr>\n<td>Body material<\/td>\n<td>Controls pressure boundary and corrosion resistance<\/td>\n<td>body \/ housing<\/td>\n<td>Carbon steel, stainless steel, alloy, forged or cast requirement<\/td>\n<\/tr>\n<tr>\n<td>Ball material \/ coating<\/td>\n<td>Affects sealing surface, wear behavior, and corrosion resistance<\/td>\n<td>ball \/ rotary ball<\/td>\n<td>Ball material, coating, surface finish, hardness requirement if specified<\/td>\n<\/tr>\n<tr>\n<td>Seat material<\/td>\n<td>Affects shutoff, torque, temperature, and media compatibility<\/td>\n<td>seats<\/td>\n<td>Soft seat, metal seat, reinforced material, or specified seat type<\/td>\n<\/tr>\n<tr>\n<td>Packing \/ seal material<\/td>\n<td>Affects external leakage and chemical compatibility<\/td>\n<td>packing, O-rings, body seals<\/td>\n<td>Packing type, O-ring material, emissions-sensitive or service requirements<\/td>\n<\/tr>\n<tr>\n<td>Port type<\/td>\n<td>Affects flow opening and pressure-drop tendency<\/td>\n<td>ball \/ bore<\/td>\n<td>Full port, reduced port, V-port, or special bore<\/td>\n<\/tr>\n<tr>\n<td>End connection<\/td>\n<td>Determines installation compatibility<\/td>\n<td>valve ends<\/td>\n<td>Flanged, threaded, butt weld, socket weld, or other connection<\/td>\n<\/tr>\n<tr>\n<td>Actuation method<\/td>\n<td>Determines operating torque and control method<\/td>\n<td>stem, handle, gearbox, actuator<\/td>\n<td>Lever, gear, pneumatic, electric, hydraulic<\/td>\n<\/tr>\n<tr>\n<td>Maintenance access<\/td>\n<td>Affects inspection, repair planning, and lifecycle review<\/td>\n<td>body construction, packing, seats<\/td>\n<td>One-piece, two-piece, three-piece, top-entry, or special construction<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure id=\"attachment_9816\" aria-describedby=\"caption-attachment-9816\" style=\"width: 1672px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9816\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-rfq-specification-checklist.png\" alt=\"Ball valve parts RFQ specification checklist for media, pressure, materials, connections and actuation\" width=\"1672\" height=\"941\" srcset=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-rfq-specification-checklist.png 1672w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-rfq-specification-checklist-768x432.png 768w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-rfq-specification-checklist-1536x864.png 1536w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-rfq-specification-checklist-18x10.png 18w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-parts-rfq-specification-checklist-600x338.png 600w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><figcaption id=\"caption-attachment-9816\" class=\"wp-caption-text\">Ball valve parts checklist for RFQ and specification review.<\/figcaption><\/figure>\n<p>This checklist is not a substitute for a datasheet. It is a preparation tool. The final valve selection should be checked against the project specification, applicable standards, manufacturer datasheet, and actual service conditions.<\/p>\n<p>When the application involves higher pressure, large size, or critical isolation duty, the pressure boundary and seat-support design should also be checked against a suitable <a href=\"https:\/\/ntgdvalve.com\/high-pressure-ball-valve\/\">high-pressure ball valve<\/a> specification route.<\/p>\n<p>After organizing these details, the buyer can prepare a clearer RFQ and ask the valve supplier or engineering team to review the valve construction against the service condition.<\/p>\n<p>For a broader product-level review after preparing the component checklist, compare the required service data against NTGD\u2019s <a href=\"https:\/\/ntgdvalve.com\/ball-valve\/\">industrial ball valve range<\/a> before finalizing the RFQ.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"What_are_the_parts_of_a_ball_valve_and_what_are_their_names\"><\/span>What are the parts of a ball valve, and what are their names?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The main ball valve part names include valve body, rotary ball, bore or port, seats, stem, packing, O-rings or seals, bonnet or gland, handle or actuator, and end connections. For each part\u2019s function and buyer check, refer to the component function table above.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_are_the_components_of_a_ball_valve\"><\/span>What are the components of a ball valve?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Ball valve components can be grouped by function: pressure boundary components, flow-control components, sealing components, operating components, and pipeline connection components. This grouping helps engineers review the valve as a system rather than as a list of isolated parts.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_are_the_five_main_parts_of_a_valve\"><\/span>What are the five main parts of a valve?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>For a ball valve, the five most basic parts are usually the body, ball, seats, stem, and operating device. For industrial specification, this list should be expanded to include packing, seals or O-rings, end connections, and body construction because these parts affect leakage, installation, and service compatibility.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_connects_to_a_ball_valve\"><\/span>What connects to a ball valve?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A ball valve connects to the pipeline through its end connections. These may be flanged, threaded, welded, socket-weld, or another project-specified connection type. The connection must match the piping design, pressure class, installation method, and maintenance requirements.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_is_the_internal_construction_of_a_ball_valve\"><\/span>How is the internal construction of a ball valve?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The internal construction usually includes a ball with a bore, seats around the ball, a stem connected to the ball, and seals or packing around the stem and body joints. When the stem turns the ball, the bore either aligns with the pipeline to open the valve or turns perpendicular to the pipeline to close it.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_does_a_ball_valve_operate\"><\/span>How does a ball valve operate?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A ball valve operates by quarter-turn rotation. The handle or actuator turns the stem, and the stem rotates the ball. When the bore through the ball aligns with the pipeline, flow passes through. When the bore turns away from the flow path, the seats seal around the ball and stop flow.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Which_way_is_off_on_a_ball_valve\"><\/span>Which way is off on a ball valve?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>In most manual lever-operated two-way ball valves, the handle perpendicular to the pipeline indicates the closed position. The handle parallel to the pipeline usually indicates the open position. This should still be verified for special handles, actuated valves, or site-specific operating arrangements.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Is_a_ball_valve_parts_diagram_the_same_as_a_ball_valve_symbol\"><\/span>Is a ball valve parts diagram the same as a ball valve symbol?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. A ball valve parts diagram shows the physical components of the valve, such as the body, ball, seats, stem, packing, and end connections. A ball valve symbol is used in P&amp;ID or process diagrams to represent the valve in a piping system. P&amp;ID symbols are a separate topic and should be handled in a symbol or process diagram guide.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Is_a_3-way_ball_valve_diagram_different_from_a_standard_ball_valve_diagram\"><\/span>Is a 3-way ball valve diagram different from a standard ball valve diagram?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Yes. A standard two-way ball valve diagram shows one inlet and one outlet. A 3-way ball valve diagram shows multiple ports and may include L-port or T-port flow patterns. L-port, T-port, and other multi-port flow patterns should be reviewed in a 3-way ball valve guide.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Is_a_ball_valve_parts_diagram_the_same_as_a_replacement_parts_list\"><\/span>Is a ball valve parts diagram the same as a replacement parts list?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. A parts diagram explains valve construction and component location. A replacement parts list is used for repair or spare parts purchasing. This article focuses on structural and functional components, not replacement kits or accessories.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Which_ball_valve_parts_commonly_affect_leakage_or_torque\"><\/span>Which ball valve parts commonly affect leakage or torque?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Seats, packing, O-rings, body seals, stem design, ball surface, and actuator sizing can all affect leakage or torque. The exact cause depends on valve design, material, pressure, temperature, media, operating frequency, and actuation method.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A ball valve is simple in operation but not simple in specification. The main ball valve parts\u2014body, ball, bore, seats, stem, packing, seals, operator, and end connections\u2014work as a system. The body contains pressure, the ball controls the flow path, the seats create shutoff, the stem transfers torque, and the packing or seals help prevent leakage around the stem and body joints.<\/p>\n<p>For industrial valve selection, a parts list should not be treated as a spare parts catalog. It should be used to review service conditions, material compatibility, sealing requirements, operating method, connection type, and maintenance access. A buyer who understands the components can prepare a clearer RFQ and reduce the risk of selecting a valve that fits the pipe size but not the application.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Application_Specification_Support\"><\/span>Application \/ Specification Support<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_9820\" aria-describedby=\"caption-attachment-9820\" style=\"width: 2560px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9820\" src=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-large-body-assembly-inspection-scaled.jpg\" alt=\"24x20 600LB large ball valve body assembly and inspection\" width=\"2560\" height=\"1706\" srcset=\"https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-large-body-assembly-inspection-scaled.jpg 2560w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-large-body-assembly-inspection-768x512.jpg 768w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-large-body-assembly-inspection-1536x1024.jpg 1536w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-large-body-assembly-inspection-2048x1365.jpg 2048w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-large-body-assembly-inspection-18x12.jpg 18w, https:\/\/ntgdvalve.com\/wp-content\/uploads\/2026\/05\/ball-valve-24x20-600lb-large-body-assembly-inspection-600x400.jpg 600w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><figcaption id=\"caption-attachment-9820\" class=\"wp-caption-text\">Large 24\u00d720 600LB ball valve body assembly and inspection in the workshop.<\/figcaption><\/figure>\n<p>For project review, prepare the service data before confirming a ball valve design. The most useful information includes media, pressure, temperature, valve size, pressure class, body material, ball material or coating, seat material, packing or seal material, port type, end connection, and actuation method.<\/p>\n<p>A complete component review helps avoid selecting a valve that fits the pipe size but not the actual service condition. NTGD Valve can review these application conditions and help clarify which component details should be confirmed before final valve selection. The goal is not only to identify the parts of a ball valve, but to match the complete valve structure to the actual service condition.<\/p>\n<p><script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the parts of a ball valve, and what are their names?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The main ball valve part names include valve body, rotary ball, bore or port, seats, stem, packing, O-rings or seals, bonnet or gland, handle or actuator, and end connections. 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The exact cause depends on valve design, material, pressure, temperature, media, operating frequency, and actuation method.\"\n      }\n    }\n  ]\n}\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0422\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u043f\u043e \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u043c \u0447\u0430\u0441\u0442\u044f\u043c \u0438 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430\u043c \u0448\u0430\u0440\u043e\u0432\u044b\u0445 \u043a\u0440\u0430\u043d\u043e\u0432, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u043a\u043e\u0440\u043f\u0443\u0441, \u0448\u0430\u0440, \u0441\u0435\u0434\u043b\u0430, \u0448\u0442\u043e\u043a, \u0441\u0430\u043b\u044c\u043d\u0438\u043a, \u0443\u043f\u043b\u043e\u0442\u043d\u0435\u043d\u0438\u044f, \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u044b \u043f\u0440\u0438\u0432\u043e\u0434\u043e\u0432, \u0442\u043e\u0440\u0446\u0435\u0432\u044b\u0435 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f, \u0447\u0442\u0435\u043d\u0438\u0435 \u0441\u0445\u0435\u043c \u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 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