3WP6B6X/N

The 3WP6B6X/N valve is manufactured by Bosch Rexroth as part of the WP Pneumatic Spool Valves series. It directs hydraulic flow in automation circuits where pneumatic pilot signals are available. The valve follows size 6 dimensions, allowing direct substitution in manifolds built to the same nominal module. A DIN 24340 Form A porting pattern without a locating hole aligns the body with standard subplates. Three main ports support typical pressure, actuator, and tank lines in compact systems. Flow paths are actuated pneumatically, so external compressed air shifts the spool instead of electric solenoids. Radial connections orient the ports around the body to facilitate short pipe runs. The unit can be mounted in any position, giving installers flexibility inside machines. Compatible HL or HLP fluids according to DIN 51524 can be used to match common mineral-oil reservoirs. Contamination limits of ISO 4406 class 20/18/15 define the required filtration level. A manual override is provided, letting technicians shift the spool by hand during setup or fault finding. The permissible operating pressure on the pressure, A, and B ports reaches 315 bar, supporting high-pressure hydraulic actuators.

The valve passes up to 60 l/min, delivering sufficient flow for small and medium cylinders without excessive pressure drop. A maximum switching frequency of 7 200 cycles per hour supports rapid repetitive motion in automated lines. Pilot control needs at least 4 bar and must not exceed 10 bar, which protects the pilot piston seals from overloading. The pilot volume of 4.24 cm³ quantifies the air required for each stroke and assists in sizing the pneumatic supply. Tank port pressure can rise to 160 bar, so back-pressure from downstream circuits will not hinder spool return. These hydraulic and pneumatic limits allow the 3WP6B6X/N valve to operate reliably within modern high-duty automation cells. At the rated flow the spool area prevents cavitation in the actuator supply lines. Frequent cycling combined with modest pilot volume keeps compressed air consumption low in pick-and-place workcells. The valve body tolerates vibration associated with manifold mounting, so switching accuracy remains stable at top frequency. The balanced spool design ensures equal response time in both flow directions, supporting precise cycle timing. These characteristics match the needs of servo-controlled presses and material handling stations that rely on consistent high-speed operation.