4WP6J6X/N

The 4WP6J6X/N valve belongs to the WP Pneumatic Spool Valves series produced by Bosch Rexroth and directs pressure media in hydraulic automation circuits through a pneumatically driven spool. A nominal size of 6 defines the flow section and helps match the valve to compact manifold blocks. Four main ports connect pressure, tank, and two actuator lines for standard four-way control. The porting pattern follows DIN 24340 Form A, so the housing aligns with common CETOP mounting plates. Radial connections orient the ports toward the sides, simplifying rigid pipe routing in tight panels. The spool is identified by symbol J, indicating the internal land arrangement used for cylinder reversing. Maximum flow is rated at 60 l/min to suit medium-capacity actuators without excessive pressure drop. Continuous service up to 315 bar on ports A, B, and P permits operation in high-pressure hydraulic systems. No locating hole is provided, so the valve seats by bolt tension alone when fitted to the subplate.

A manual override is present, allowing maintenance staff to shift the spool during commissioning or fault isolation, and it enables direct mechanical actuation when pilot air is absent. Pneumatic pilot operation requires at least 4 bar and not more than 10 bar, giving a defined control pressure window. Pilot volume of 4.24 cm³ determines the air demand for each shift and influences response time. The valve may switch up to 7200 times per hour, enabling rapid cycling in automated sequences. Port T tolerates back pressure to 160 bar, so return line restrictions will not force the housing beyond structural limits. Cleanliness class ISO 4406 20/18/15 specifies the maximum particulate level in the hydraulic fluid to prevent spool wear. Together, these limits on pressure, cleanliness, and cycling secure reliable service in repetitive hydraulic positioning tasks.