Bosch Rexroth | Z1S10TA30-2TB9-4XF
Z1S10TA30-2TB9-4X/F
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The Z1S10TA30-2TB9-4X/F is a check valve developed by Bosch Rexroth for the Z1S Check Valves series to control one-way flow in hydraulic automation manifolds. It mounts on sub-plates that follow the ISO 4401-05-04-0-05 porting pattern, while the NFPA T3.5.1 R2-2002 D05 pattern allows use with North American standard blocks. Flow is routed through the TA channel so that oil passes from port A to port T and is stopped in the reverse direction; port B remains isolated because channel Tb is closed. The element sits on the plate side in a 1→2 direction, which simplifies stacking with other sandwich valves. A cracking pressure of 3.0 bar ensures that the valve opens only after a defined upstream pressure is reached, and the body withstands continuous system pressures up to 350 bar without distortion.
The unit handles flow rates up to 100 l/min, making it suitable for medium-capacity circuits that cycle rapidly. Proper operation is supported when hydraulic fluid temperatures stay below 80 °C and the ambient environment also remains at or under 80 °C. Acceptable fluid viscosities extend to 500 mm²/s, so the valve can run with heavier oils used in mobile or industrial equipment. FKM seal material resists swelling when exposed to many synthetic or bio-based fluids, maintaining leak-free joints. No throttle nozzle is included, so pressure drop across the valve remains minimal. The design omits pilot ports X and Y and provides no measuring ports, reducing potential leakage points. Cleanliness must be held to ISO 4406 20/18/15 to protect the seat from particle damage and ensure reliable closure.
Technical Specifications
Ambient Temperature Max
+80 °C
Channel Tb State
Closed
Check Valve Channel
TA
Cleanliness Class
ISO 4406 20/18/15
Cracking Pressure (ta)
3.0 bar
Hydraulic Fluid Temp Max
+80 °C
Installation Direction (ta)
Plate Side (1→2)
Maximum Flow
100 l/min
Maximum Operating Pressure
350 bar
Measuring Ports
None
Nfpa Pattern
T3.5.1 R2-2002 D05
Pilot Ports X And Y
None
Porting Pattern
ISO 4401-05-04-0-05
Seal Material
FKM
Throttle Nozzle
None
Viscosity Max
500 mm²/s
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