What Is Check Valve?

What Is Check Valve?

what is check valve

A check valve is a device used to control the flow of liquid or gas through a piping system. There are many different types of check valves, with different functions and materials used for their bodies. In this article, we will discuss the types of check valves available and the various applications for which they are used. We will also look at their types, applications, and cracking pressure. Hopefully, we have provided all of the information you need to understand this useful device.


What does a check valve do? Check valves control flow in one direction but prevent reverse flow. These valves are generally used on the return line prior to a reservoir, as they prevent reverse flow. They also allow regenerative flow in cylinder applications. The table below provides information on check valve functions and corresponding parts. Typically, check valves are used in cylinder applications to prevent reverse flow of liquids or gas. They can be either single or dual check valves.


Depending on the purpose, check valves are commonly used in a variety of fluid systems, including those in power plants and chemical plants. Typical applications in the nuclear industry include feed water control, dump lines, and make-up water. Other uses include miscellaneous process systems, N2 systems, monitoring systems, and aerospace applications. The C Series check valve is a great example of a valve that is designed to control unidirectional flow. Its blow-out-resistant seat and back-stopped poppet construction make this valve an excellent choice for a variety of different applications.


A check valve is a mechanical device used to regulate fluid flow, preventing it from leaking. It functions by lifting the sealing member off the seat when the flow is in the desired direction. The lifting mechanism forces the sealing member to return to its seat when the flow slows down. Gravity-assisted designs are less maintenance-intensive, but require installation in vertical piping. Other types, like gravity-dependent globe style lift checks, only work in horizontal piping.

Cracking pressure

The Cracking pressure of a check valve is determined by its designed design. This value is maintained for the life of the valve, but extended service and harsh conditions may decrease its cracking pressure. Similarly, particulate contamination, wear of the seats, and galling of wetted surfaces can negatively affect the Cracking pressure of a check valve. Fortunately, these factors can be minimized or eliminated altogether by making proper selection of the correct check valve.


The global Check Valve market is expected to grow at a considerable rate over the next few years. It is estimated to grow at a steady pace in 2022 and 2026. The report analyzes the global Check Valve market with its key drivers, restraints, and competitive landscape. It also covers the regional and country-level market scenario and major players in the global Check Valve market. It also analyzes the competitive landscape, market segments, and macroeconomic factors.

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