Bosch Rexroth | S20P05-1X
S20P05-1X/
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The S20P05-1X/ valve belongs to the Type S Check Valves series from Bosch Rexroth and is used to permit flow in one direction within hydraulic automation circuits. A body diameter of 42 mm lets the cartridge fit precisely in matching cavities, while nominal size 20 defines the expected flow capacity for medium lines. Its screw-in thread connection streamlines manifold assembly without extra adapters, and the port is machined with G3/4 threads under ISO 228-1 to suit standard pipe work. A 36 mm hex across flats offers a clear wrench surface for consistent torque application during installation. With a weight of 1.0 kg, the valve adds minimal mass to compact block arrangements.
The unit tolerates operating pressures up to 450 bar, enabling use in high-pressure pump circuits, and a cracking pressure of 0.5 bar lets it open with low backpressure to reduce energy loss. Reliable sealing is maintained across a fluid temperature range of −30 to +80 °C, and compatibility with HL, HLP, HLPD, HVLP, and HVLPD oils covers common mineral and detergent fluid selections. A viscosity window from 2.8 to 500 mm²/s keeps response consistent from cold start to full operating temperature. The mean time to dangerous failure is rated at 150 years, supporting long-term safety targets, and fluid cleanliness must remain at ISO 4406 20/18/15 to avoid internal wear.
Technical Specifications
Body Diameter
42 mm
Cleanliness Class
ISO 4406 20/18/15
Connection Type
Screw-In Thread
Cracking Pressure
0.5 bar
Fluid Temperature Range
−30 to +80 °C
Hex Size (across Flats)
36 mm
Hydraulic Fluid
HL/HLP/HLPD/HVLP/HVLPD
Maximum Operating Pressure
450 bar
Nominal Size (ng)
20
Port Thread
G3/4 (ISO 228-1)
Reliability Mttfd
150 years
Viscosity Range
2.8 to 500 mm²/s
Weight
1.0 kg
1620 Old Apex Road
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