Bosch Rexroth | Z2S16B1-5X
Z2S16B1-5X/
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The Z2S16B1-5X/ check valve is produced by Bosch Rexroth within the Z2S Check Valves series for hydraulic automation circuits that require secure flow blocking. The nominal size 16 defines the flow passage and matches medium-capacity manifolds, while a maximum operating pressure of 315 bar allows use in high-pressure lines. A flow rating of 300 l/min supports actuators that demand significant oil volume, and the poppet lifts at a cracking pressure of 3 bar to stabilize standby conditions. Leakage-free blocking in channel B keeps downstream loads fixed without external devices. The valve can be mounted in any position, and its porting pattern follows ISO 4401-07-07-0-05 for direct interchange on standard subplates. System oil must meet ISO 4406 cleanliness class 20/18/15 to avoid seat wear and sticking.
A maximum pressure differential of 210 bar with HFC fluids limits stress when water-glycol media are used. Four 11 mm holes accept ISO 4762 M10 screws that fasten the body; each screw is tightened to 70 Nm. A plug screw with wrench size SW41 permits internal access for service. NBR seals contain the fluid and resist common hydraulic oils. The mean time to dangerous failure is 150 years, supporting long service intervals in safety-oriented equipment.
Technical Specifications
Cleanliness Class (iso 4406)
20/18/15
Cracking Pressure
3 bar
Installation Position
Any
Leakage-free Blocking Channel
B
Max Pressure Differential (hfc)
210 bar
Maximum Flow
300 l/min
Maximum Operating Pressure
315 bar
Mounting Hole Diameter
11 mm
Mounting Screws
ISO 4762 M10 (x4)
Mttfd
150 years
Plug Screw Size
SW41
Plug Screw Tightening Torque
70 Nm
Porting Pattern
ISO 4401-07-07-0-05
Seal Material
NBR
Size
16
1620 Old Apex Road
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