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The 4WP10C3X/O/V/12 spool valve belongs to the WP Pneumatic Spool Valves series and is manufactured by Bosch Rexroth for directing hydraulic flow in automated machinery. It features a nominal size of 10, allowing integration into medium flow manifolds, and operates with a maximum pressure of 350 bar on ports A, B, and P to manage high-pressure supply lines. The design accommodates flows up to 160 l/min so cylinders and motors can move at required speeds. An ISO 4401-05-04-0-05 porting pattern aligns the body with standard subplates to simplify mounting. Hydraulic oil with viscosities up to 500 mm²/s can be processed, extending the usable temperature range of the system. The valve may be installed in any position, which aids compact stack layouts. FKM seals contain the working fluid when exposed to aggressive media. The circuit must maintain ISO 4406 20/18/15 cleanliness to keep the spool moving freely.
The pilot stage governs actuation and requires at least 8 bar to shift, while withstanding up to 160 bar to suit systems with elevated control pressure. Port T tolerates back-pressure up to 210 bar so return flow can share a common manifold. A 7/16-20 UNF thread on the pilot oil port matches common fittings for quick connection. Pilot volume is 6.9 cm³, influencing the response time by defining the oil displaced during each changeover. The valve remains functional at ambient temperatures up to 70 °C and with fluid temperatures reaching 80 °C, matching typical industrial environments. An MTTFd of 150 years indicates a very low probability of dangerous failure over its lifetime.
Fluid Cleanliness Class
ISO 4406 20/18/15
Installation Position
Any
Max Ambient Temperature (fkm)
70 °C
Max Fluid Temperature (fkm)
80 °C
Max Viscosity
500 mm²/s
Maximum Flow
160 l/min
Maximum Operating Pressure (a, B, P)
350 bar
Maximum Pilot Pressure
160 bar
Maximum Port T Pressure
210 bar
Minimum Pilot Pressure
8 bar
Mttfd
150 years
Nominal Size
10
Pilot Oil Port Thread
7/16-20 UNF
Pilot Volume
6.9 cm³
Porting Pattern
ISO 4401-05-04-0-05
Seal Material
FKM
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