Examples of Check Valve Applications

A Check Valve is a mechanical device used to control fluid flow. These valves are usually specified in oil and gas processing, refining processes, and power generation processes. However, their application is not limited to these industries. They can also be used in chemical manufacturing, steam condensate systems, and power generation processes.

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A ball check valve is a type of safety valve that prevents backflow. When the flow pressure drops, the ball will slide back into the seat, preventing backflow. If the valve component needs to be replaced, it can be easily replaced without disassembling the valve. Simply loosen the coupling nut and access the components.

Spring check valves are designed to prevent the backflow of a product into another piping system. They are typically made from 316L stainless steel and meet 3-A standards. They are also field-serviceable and require no special tools to maintain. This type of valve is ideal for many different applications. Here are some examples of their uses.

A spring-assist check valve relies on the strength of the spring to hold the discs against the seats in the closed position. If the pressure in upstream piping is greater than the pressure in the check valve, the discs will rise off the seats. The spring force will then automatically bring the doors back to their closed position.

Wafer check valves are ideal for applications that need to control backflow. They can be used on a range of fluids, from gas to non-compressible liquids, and come in a variety of materials. However, they are not ideal for compressible liquids or pneumatic applications.

A wafer check valve has a wafer-like profile, which makes it a good choice for systems that require a relatively short takeout length. It works similarly to a swing check valve, and consists of a disc and a seating arrangement. When the material flowing in one direction passes through the valve, it lifts the disc from the seating arrangement. However, when the flow of material is in the reverse direction, it pushes the disc back into the seating arrangement, closing off the flow.