Directional Spool Valve H-4WMMH25E6X/F6S2 - Bosch Rexroth R901505781

Manually operated directional valves are needed where no control voltage is present or where deliberate manual control is wanted. This pilot-operated valve switches up to 700 l/min at a maximum of 350 bar from a hand lever.

Benefits

• Manual actuation without control voltage, for maintenance, set-up and emergency functions.
• 3 switching positions with spool symbol E on 4 ports.
• Flow up to 700 l/min in size 25, maximum operating pressure 350 bar.
• External pilot oil supply and external pilot oil return, pilot stage independent of the main circuit.
• 17.53 kg weight, subplate mounting ISO 4401-08-08-0-05, NBR seals.

Application

Valves like this sit on test rigs, repair stations and large power units where movements are started by hand. Because the pilot stage is fed externally, the force needed at the lever stays low. HL is the intended hydraulic fluid.

Manufacturer

Bosch Rexroth, material number R901505781, type designation H-4WMMH25E6X/F6S2. Data sheets RE 24851 and RE 24851-B carry the characteristic curves, port dimensions and installation notes.