A swing check valve is one of the most common types of valve. Its major function is to allow fluid flow in one direction. Therefore, it prevents fluid backflow by shutting fully when the pressure reaches zero. This valve is automatic, a feature that enhances its efficiency. Here’s more on how it works, applications, and maintenance.
How it Works
This valve only uses one principle, which is pressure. It has a disc inside that acts as a door to open and close the open. The disc is attached with a hinge for easy opening and closing. The fluid’s pressure forces the disc open when it’s flowing in the desired direction. When the pressure reduces, causing backflow, the back-flowing fluid forces the disc to close.
Applications
This valve is used in many applications that require the fluid to flow in one direction. Some of the most common applications include
Flush toilet- the swing check valve is the flapper valve that prevents the backflow of water from coming from the bottom of the tank.
Pipelines: switch valves are used in pipelines to prevent backflow, which could be dangerous.
Water and sewerage piping systems and other situations where backflow could cause problems.
Maintenance
Ideally, your swing check valve manufacturer should advise you on its maintenance. However, here are some maintenance tips.
1. Wipe off dust and dirt regularly to keep them clean
2. Carry out regular inspections to check for leakages, rust, corrosion, and wear.
3. Ensure the valve is always lubricated
4. Check it regularly when placed for a long time.
Swing check valves are the real deal when it comes to applications that require the fluid to flow in one direction. They have a disc that functions as a door that closes and opens under pressure preventing backflow. Some of the most common applications include pipelines, water and sewerage piping systems, chemical, pharmaceutical, and fertilizer. The best way to maintain it is through regular checkups, cleaning, and lubrication.
