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What is a stop check valve? Stop-check valves are valves used as either shut-off valves or as check valves. This […]

What is a dual check valve?  A dual check valve is a special type of check valve which is used

What is a spring check valve?  A spring check valve is a type of check valve used to prevent fluid

By Bruce Tseng | Reviewed by NTGD Valve Engineering TeamLast updated: March 2026 Quick Answer NRV valve full form is

What is a double check valve? A double check valve is a type of valve that is used to prevent

A practical industrial guide to non-return valves, covering working principle, flow direction diagrams, main types, application mapping, troubleshooting, and RFQ-ready selection checks.

Cryogenic globe valves are used in shut-off and throttling service where sealing stability, packing protection, and low-temperature reliability matter far

A technical guide to Y pattern / Y-type globe valves, covering 45° body design, flow direction verification, lower pressure drop, application fit, limitations, and RFQ checks for industrial buyers.

A steam globe valve is a critical shut-off and throttling valve designed for industrial steam service. It is widely used

What is a resilient wedge gate valve? A resilient wedge gate valve is a type of valve that has a

Understand how double-disc constructions differ in seating, release, torque, and low-ΔP behavior. Use the application-fit, troubleshooting, and RFQ checks to verify a proposed valve.

What is a through conduit gate valve?  Through conduit gate valve is a type of gate valve which is designed

What is a parallel slide gate valve?  A parallel slide gate valve is a type of gate valve which uses

What is a knife edge gate valve?  A knife edge gate valve is a type of gate valve which is

A product-support guide to ductile iron gate valves, covering DI meaning, working principle, main parts, resilient wedge configurations, waterworks applications, dimensions, and RFQ specification checks.

Last Updated: March 2026 Reviewed by: NTGD Valve Engineering Team Expertise: Industrial Gate Valves, Fire Protection Systems, Shut-off Valve Engineering

A technical guide to ceramic ball valve construction, lined internal parts, severe-service applications, selection boundaries, RFQ data and troubleshooting for abrasive or corrosive media.

A technical guide to jacketed ball valve selection, covering full vs partial jacket designs, steam or hot oil jacket media, viscous service risks, troubleshooting and RFQ data.

What is a high-temperature ball valve?  High-temperature ball valves are valves that can work at very high temperatures above 400

 What is a rising stem ball valve?  The rising stem ball valve is a type of ball valve with a

An API 6D ball valve is a pipeline-service shutoff valve specified when testing records, material traceability, documentation and RFQ verification matter. This guide explains types, bore options, design features, inspection documents and selection limits.

What is a V port ball valve?  A V port ball valve is a type of ball valve with a

A socket weld ball valve is a quarter-turn ball valve with permanent socket weld pipe ends. This guide explains socket weld end connections, dimensions, ratings, materials, maintenance limits and RFQ checks for industrial service.

 What is a lockable ball valve?  A lockable ball valve is a type of ball valve with a lock mechanism.

This guide explains how a ball valve with drain port communicates with the pipeline or body cavity, how to isolate and drain safely, and what buyers should confirm before specifying the valve.

A practical guide to 3 piece ball valve body construction, key parts, working principle, serviceability, RFQ checks, and application fit for industrial piping.

A technical guide to high pressure ball valve design, working principle, key components, pressure-temperature review, actuation, applications, troubleshooting and RFQ selection data.

What is a gas ball valve? The gas ball valve is a type of ball valve that is meant for

 What is a motorized ball valve?  A motorized ball valve is a type of ball valve that uses electricity to

What is a three-way valve?  A three-way valve is a valve that has three ports. These valves are commonly used

Butterfly valves are commonly used in many industries, such as petroleum, chemicals, metallurgy, power and water industries, as it is

Valves are devices used to regulate fluid flow, pressure, and flow direction. Regulated fluid can be a liquid, a gas,

The pneumatic ball valve is a pneumatic actuator-equipped ball valve. With the fastest operating speed of 0.05 seconds per second,

The globe valve and the gate valve have a certain similarity in appearance, and as both valves have the role

In normal conditions, industrial valves are not subjected to a strength test while in operation, but after maintenance, the corrosion-damaged

Industrial Valves have some problems during operation, e.g. the valve is not closed tightly. What am I supposed to do?

  Regulating valves are often referred to as control valves. It accepts the control signal output from the adjustment control

A technical guide to valve corrosion solutions and prevention for industrial valves, covering diagnosis, service conditions, materials, coatings, linings, component risks, and RFQ-ready service data.

A flanged ball valve is a type of ball valve with flanged connections, which are commonly used due to their