What is check valve?

What is check valve?
A check valve is a type of valve that allows fluid (liquid or gas) to flow in one direction while preventing it from flowing in the opposite direction. It's essentially a one-way valve. When the pressure of the fluid is greater on the inlet side, the valve opens, allowing flow. When the pressure reverses, the valve closes, preventing backflow. Check valves are commonly used in:

1. Pumping systems to prevent backflow when the pump is off.
2. Plumbing systems to prevent water hammer.
3. Hydraulic systems to control fluid flow direction.

They're crucial for maintaining system efficiency and preventing damage.

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