Types of Non-Return Valves for Optimal Flow Direction in Pipes

A non-return valve can be fitted to ensure that a medium flows through a pipe in the right direction, where pressure conditions may otherwise cause reversed flow.

A non-return valve allows a medium to flow in only one direction. The flow through the non-return valve causes a relatively large pressure drop, which has to be taken into account when designing the system.

There are different types of non-return valves, such as spring-loaded, swing type, and clapper type valves.

Non-return valves are e.g. used with mixing loops in heating and cooling systems to ensure proper operation, and with domestic water systems to prevent backflow.

What are the Types of Non-Return Valve?

1. Lift Check Valve
2. Swing Check Valve
3. Folding Disc Check Valves
4. Tilting Disc Check Valve
5. Stop Check Valve
6. Vertical or In-Line Check Valve