Bosch Rexroth | Z1S6P05-4XV-SO104
Z1S6P05-4X/V-SO104
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The Z1S6P05-4X/V-SO104 check valve is manufactured by Bosch Rexroth within the Z1S Check Valves series and serves to block reverse flow in hydraulic automation circuits. It is built in size 6, matching compact manifold layouts, and is assigned to channel P so it safeguards the primary pressure gallery. Flow is allowed from P1 to P2, and the poppet lifts once the inlet reaches a cracking pressure of 0.5 bar, giving low opening resistance. Continuous service is approved up to 350 bar, enabling use in high-pressure clamping or pressing systems. A maximum flow of 40 l/min establishes the volumetric limit, while reliable behavior is maintained across a viscosity band of 2.8 to 500 mm²/s. Hydraulic fluid temperatures between -20 °C and +80 °C are accepted, ensuring functionality during cold starts and elevated oil temperatures.
The valve mounts on a subplate with the ISO 4401-03-02-0-05 porting pattern, which corresponds to the NFPA D03 interface, and it is secured by four M5 screws in strength class 10.9. FKM sealing elements provide chemical resistance to common mineral and several synthetic oils within the stated temperature range. Supply oil cleanliness must meet ISO 4406 code 20/18/15 to avoid seat damage and preserve leak-tight closure. Installation position can be any orientation, giving designers flexibility in manifold layout. The assembly weighs 0.8 kg, adding minimal mass to equipment and simplifying handling during maintenance. These characteristics define how the valve integrates into pressure-retaining, one-direction flow control tasks.
Technical Specifications
Channel
P
Cleanliness Class
ISO 4406 20/18/15
Cracking Pressure
0.5 bar
Direction Of Flow
P1 → P2
Hydraulic Fluid Temp Range
-20 to +80 °C
Installation Position
Any
Maximum Flow
40 l/min
Maximum Operating Pressure
350 bar
Mounting Screws
4 x M5 (ISO 4762-10.9)
Nfpa Interface
D03
Porting Pattern
ISO 4401-03-02-0-05
Seal Material
FKM
Size
6
Viscosity Range
2.8 to 500 mm²/s
Weight
0.8 kg
1620 Old Apex Road
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