What is Pilot Operated Check Valve | Definition, Construction, Working
Pilot Operated Check Valve
When pilot signal of pressurized oil is used to control movement of poppet in the check valve , it is known as pilot operated check valve.
Construction and Working
- It consists of a valve body with inlet and outlet ports and poppet loaded with the help of spring.
- Plunger and plunger piston is provided with spring at the pilot port.
- When the oil enters through the pilot port, it pushes the plunger towards the poppet and it will move the poppet to connect inlet port P and port A. The oil will flow freely from port P to port A.
- When pilot port is out off by oil supply, the poppet block the valveas plunger force is removed and restricts the reverse flow of oil.
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