Rexroth Z2FS22-8-31/S Hydraulic Check Valve
Shop the genuine Rexroth Z2FS22-8-31/S (R900456783) pilot-operated double check valve. Size NG22, sandwich plate design for leak-free blocking of actuator ports in demanding hydraulic systems. Max pressure 315 bar.
Rexroth Z2FS22-8-31/S Hydraulic Check Valve
The Bosch Rexroth Z2FS22-8-31/S is a high-performance, pilot-operated double check valve designed for reliable hydraulic system control. As a sandwich plate valve, it is engineered for vertical stacking assemblies, fitting between a directional valve and its subplate. Its primary function is to provide leak-free blocking of one or two actuator ports, making it ideal for applications requiring load holding, such as preventing a vertically mounted cylinder from drifting or dropping. The valve allows free flow from the directional valve to the actuator and blocks the return flow until a pilot pressure signal from the opposing line opens the check valve. This model features pre-opening, which ensures smooth, shock-free decompression of the pressurized fluid before the main poppet opens.
Technical Specifications:
- Valve Type: Pilot-operated double check valve, sandwich plate design
- Size: NG22 (Nominal Size 22)
- Mounting Pattern: Conforms to ISO 4401-08-07-0-05
- Maximum Operating Pressure: 315 bar (4568 psi)
- Maximum Flow Rate: 350 L/min (92.5 GPM)
- Valve Function: Check valve in channels A and B with pre-opening
- Seals: NBR (Nitrile Butadiene Rubber)
- Material Number (MNR): R900456783
| Brand | Rexroth |
|---|---|
| Model | Z2FS22-8-31/S |
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