The main purpose of a check valve in a system is to prevent backflow, which could damage equipment or contaminate media upstream. Check valves are generally installed in pipelines to prevent backflow. A check valve is basically a
one-way valve, in which the flow can run freely one way, but if the flow turns the valve will close to
protect the piping, other valves, pumps etc.
There are basically two type of check valve:
- Vertical check valve (Non return valve)
- Horizontal check valve (T type)