Proportional Directional Valve 4WRZE32E520-7X/6EG24N9EK31/A1V - Bosch Rexroth R978911114

Where hydraulic oil runs hot or the fluid attacks NBR, the sealing material decides how long the valve lasts. The 4WRZE32E520-7X/6EG24N9EK31/A1V is built with FKM seals and controls 520 l/min nominal flow at up to 350 bar operating pressure.

Benefits

• FKM seals for duties where the temperature and fluid resistance of NBR falls short, running on HL hydraulic fluid.
• 520 l/min nominal flow with a maximum flow of 1600 l/min across four ports.
• Maximum operating pressure 350 bar on connection diagram ISO 4401-10-09-0-05 in size 32.
• Internal pilot oil supply with external pilot oil return, which keeps the pilot stage clear of back pressure in the shared return line.
• Concealed auxiliary actuation on the housing, so the spool can be moved during commissioning without an electrical signal.
• Spool symbol E, 3 switching positions, 37.18 kg valve weight, analog ±10 V command value through a 7-pole connector (6 + PE) according to EN 175201-804.

Applications

The valve is intended for valve stands on test rigs, forming machines and foundry equipment where oil temperature and duty cycle both run high. External pilot oil return is the right choice when several valves share one return line and back pressure builds up there. Concealed auxiliary actuation helps with bleeding and with checking the piping before the controller is wired up.

Manufacturer

Made by Bosch Rexroth, material number R978911114, product family 4WRZ(E). Dimensions, characteristic curves and terminal assignment are documented in data sheet RE 29115 for the pilot-operated proportional directional valve and in the hydraulic valve overview RE 07600-B.