{"id":10747,"date":"2026-07-15T09:19:39","date_gmt":"2026-07-15T09:19:39","guid":{"rendered":"https:\/\/ntgdvalve.com\/?p=10747"},"modified":"2026-07-16T01:04:13","modified_gmt":"2026-07-16T01:04:13","slug":"gate-valve-pressure-rating","status":"publish","type":"post","link":"https:\/\/ntgdvalve.com\/pt\/gate-valve-pressure-rating\/","title":{"rendered":"Classifica\u00e7\u00e3o de press\u00e3o da v\u00e1lvula de gaveta: como a classe, o material e a temperatura determinam a press\u00e3o admiss\u00edvel"},"content":{"rendered":"

Author Name:<\/strong> Bruce Zheng<\/p>\n

Author Role:<\/strong> Co-Founder and Valve Engineer at NTGD Valve<\/p>\n

Author Bio:<\/strong> Bruce Zheng is Co-Founder and Valve Engineer at NTGD Valve, focusing on industrial valve selection, application, and technical content for global B2B buyers.<\/p>\n

Last Updated:<\/strong> July 15, 2026<\/p>\n

Quick answer:<\/strong> A gate valve pressure rating<\/strong> is a conditional limit, not a pressure value obtained from the Class number alone. The resulting allowable pressure<\/strong> depends on the gate valve pressure class, body material or material group, design temperature, applicable rating basis, complete-valve construction, end connections, and any lower restriction in the manufacturer\u2019s datasheet or project specification.<\/p>\n

A Class 150 gate valve is therefore neither permanently limited to nor guaranteed for one fixed psi value. The correct value is found in the applicable gate valve pressure rating chart<\/strong> or pressure-temperature table after the material group and design temperature have been confirmed. Selecting the wrong material group or temperature condition can overstate the allowable pressure and create a noncompliant selection; it can also understate the rating and drive an unnecessary Class upgrade.<\/p>\n

Decision rule:<\/strong> Confirm the material group and governing design temperature before accepting a Pressure Class, then verify the result against the complete product data.<\/p><\/blockquote>\n

This guide covers conventional industrial gate valves. It does not provide a universal Class-to-psi conversion table and does not address knife gate valve pressure ratings.<\/p>\n

\"Gate
Gate valve allowable pressure is determined by Pressure Class, material group, design temperature, and verified product limits.<\/figcaption><\/figure>\n
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