A check valve is a crucial component in piping systems used to prevent backflow of fluids or gases. In this guide, we will provide information on the function of check valves, various types of check valves, the materials used, and well-known brands in the industry.
Function of Check Valve:
Check valves serve to maintain unidirectional flow in piping systems. Their functions include preventing backflow and ensuring system stability. By preventing backflow, check valves help maintain pressure and overall performance in the piping system.
Types of Check Valves:
Some common types of check valves include:
- Swing Check Valve: It has a swinging disc or flap design. It opens when flow passes through and closes when backflow occurs.
- Lift Check Valve: It features a vertically lifted valve design. It opens when flow passes through and closes during backflow.
- Ball Check Valve: It utilizes a spherical ball that moves freely within the housing. It lifts during flow and closes when backflow occurs.
Materials for Check Valves:
The choice of materials for check valves depends on the application and operating conditions. Some commonly used materials include carbon steel, stainless steel, cast iron, bronze, and plastics such as PVC, CPVC, and PVDF.
