Bosch Rexroth | Z2S16B1-5XV
Z2S16B1-5X/V
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The Z2S16B1-5X/V valve is part of the Z2S Check Valves series from Bosch Rexroth and is used to hold loads and stop reverse flow in hydraulic automation circuits. Its nominal size of 16 determines the flow cross-section available to the system, while a maximum operating pressure of 315 bar sets the allowable working limit. A maximum flow rate of 300 l/min keeps pressure losses low in high-volume lines, and a cracking pressure of 3 bar ensures the valve begins to open at a predictable threshold. Leakage-free blocking in channel B provides secure load retention when the actuator is idle, and a built-in pre-opening function reduces pressure spikes during switching. The valve can be installed in any position, giving designers freedom in manifold layout, and FKM seals allow use with a broad range of hydraulic fluids.
An ISO 4401-07-07-0-05 porting pattern lets the valve mount directly on standard subplates without adapter blocks. Oil cleanliness must be maintained at ISO 4406 20/18/15 to limit wear on the check mechanism and preserve long-term accuracy. Two M6-10.9 mounting screws fasten the body to the manifold, and each plug screw is tightened to 70 Nm to prevent loosening under pulsating pressure. The mean time to dangerous failure is rated at 150 years, supporting safety-related applications that demand very low probability of malfunction. These installation, filtration, and fastening parameters ensure the valve meets its flow and pressure ratings throughout its service life.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Cracking Pressure
3 bar
Installation Position
Any
Leakage-free Blocking
Channel B
Maximum Flow
300 l/min
Maximum Operating Pressure
315 bar
Mounting Screws
M6-10.9 (2x)
Mttfd
150 years
Nominal Size
16
Plug Screw Torque
70 Nm
Porting Pattern
ISO 4401-07-07-0-05
Pre-opening
Yes
Seal Material
FKM
1620 Old Apex Road
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