Bosch Rexroth | 4WP6M6XNV5
4WP6M6X/N/V/5
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The 4WP6M6X/N/V/5 spool valve is produced by Bosch Rexroth for the WP Pneumatic Spool Valves series. It directs hydraulic actuators through a pneumatic pilot stage, letting machine builders automate pressure and flow sequences. Pneumatic actuation removes the need for electric coils and provides reliable shifting even in hazardous areas. The valve carries nominal size 6 so passages match ISO 4401-03 manifolds used on compact hydraulic power packs. Maximum pressure at ports A, B, and P is 315 bar, allowing the unit to control high-pressure circuits, while the tank port tolerates up to 160 bar to suit return lines with back-pressure accumulators. To move the spool a pilot supply between 4 and 10 bar is required; the lower limit guarantees positive engagement and the upper limit defines component stress limits. Rated flow of 60 l/min supports medium power cylinders without excessive pressure drop. The valve installs in any position, giving layout flexibility, and a manual override is provided so maintenance staff can shift the spool when pilot air is absent.
Interface details assist mounting and service. The valve shares the ISO 4401-03-02-0-05 porting pattern, and its NFPA D03 footprint lets it bolt onto standard subplates without adapters. A tightening torque of 7 Nm on the mounting screws secures the housing against leakage while preventing thread damage. The clamping length is 42 mm so stack systems can be dimensioned accurately. FKM seals resist common hydraulic fluids and elevated temperatures, extending service intervals. Cleanliness level 20/18/15 under ISO 4406 must be maintained to prevent spool sticking and premature wear. A switching frequency of 7,200 cycles per hour defines the maximum number of reliable shifts during high-duty automation sequences, guiding designers when selecting pilot valves and compressed air capacity.
Technical Specifications
Actuation Type
Pneumatic
Clamping Length
42 mm
Fluid Cleanliness (iso 4406)
20/18/15
Installation Position
Any
Manual Override
Yes
Max Flow
60 l/min
Max Pilot Pressure
10 bar
Max Pressure (a,b,p)
315 bar
Max Tank Port Pressure (t)
160 bar
Min Pilot Pressure
4 bar
Mounting Screw Torque
7 Nm
Nfpa Mounting Interface
D03
Nominal Size
6
Porting Pattern
ISO 4401-03-02-0-05
Seal Material
FKM
Switching Frequency
7200 1/h
1620 Old Apex Road
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