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Hydraulic Check Valve

- Apr 15, 2017 -

Function: forward circulation, reverse controlled circulation

Structure: ordinary check valve + hydraulic control device

K unreasonable pressure oil, A → B

working principle<

K pressure oil, A → B

Structural features: B → A, ∵ PB = P workers, very high

∴ spring chamber back pressure is very large, pk great when the top of the valve heart, affecting reliability.

So the following measures can be adopted

1) Pre-pressure relief using pilot valve

2) the use of external drain back to reduce the back pressure

Application: ∵ hydraulic control check valve has a good anti-sealing

∴ commonly used in packing, locking and balancing circuits