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The Physical Reason for the Birth of Check Valve
2022-11-07

The problem of water hammer in the piping system is exacerbated for high pressure piping systems where multiple pumps are used together.

Water hammer is a pressure wave of changing flow in a pressure pipe, it is a hydraulic shock caused by a rise or fall in pressure caused by changes in the fluid flow rate in the pressure pipe.

To prevent the potential danger of water hammer in pipes, researchers have used certain new structures and materials in the design of check valves over the years. Encouraging progress has been made in reducing the impact of water hammer while ensuring the applicable performance of the check valve.

A check valve is a valve that automatically opens and closes the valve plate by relying on the flow of the medium itself. It is used to prevent the backflow of the medium, so it is also called a one-way valve, unidirectional valve.

Check valve can be divided into wafer check valve, swing check valve and lift type check valve.

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Wafer Check Valve
API WCB 20" 300LB Dual Plate Wafer Check Valve
20" 300LB wafer check valve is made according to API 594 standard. Made by WCB, 20" 300LB wafer check valve has the structural characteristics of dual plate and built-in type. It has wafer type connection mode.
Wafer Check Valve
8" 150LB Dual Plate Wafer Check Valve API WCB
8" 150LB wafer check valve is made according to API 594 standard. Made by A216 WCB + 316, 8" 150LB wafer check valve has the structural characteristics of dual plate. It has wafer type connection mode.
Wafer Check Valve
API594 598 12" 150LB Dual Plate Wafer Check Valve Wafer (RF)
12" 150LB wafer check valve is made according to API 594 standard. Made by WCB+316, 12" 150LB wafer check valve has the structural characteristics of dual plate. It has wafer (RF) connection mode.
Wafer Check Valve
20" 600LB Dual Plate Wafer Check Valve LCC API594
20" 600LB wafer check valve is made according to API 594 standard. Made by A352 LCC, 20" 600LB wafer check valve has the structural characteristics of dual plate and built-in type. It has double flange RF connection mode.
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