Hydraulic check valve
Parker Hannifin Hydraulics Group (Europe)
The counter-flow direction is blocked. By applying the pilot pressure, the poppet can be lifted from its seat against the pressure. Thus flow in the counter-direction is also possible. There are 1 and 2 stage poppets available with pilot ratios of 1 : 5 and 1 : 40, to suit different operating conditions.
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