Proportional Directional Valve 4WRZ32E1-520-7X/6EG24N9EK4/V - Bosch Rexroth R901174915

Large installations almost always carry pressure in the return, and that is precisely what disturbs an internally drained pilot stage. The 4WRZ32E1-520-7X/6EG24N9EK4/V takes control oil internally and drains it separately through Y while metering 520 l/min nominal flow with spool symbol E1 at up to 350 bar.

Benefits

• 520 l/min nominal flow with spool symbol E1, 4 ports and 3 switching positions.
• Internal pilot oil supply with external drain through Y, so tank pressure does not act on the pilot stage.
• This version carries no pressure reducing valve in the pilot stage, operating pressure reaches 350 bar.
• Electrically the valve works with external electronics at 24 VDC, connected through a 7-pole connector (6 + PE) to EN 175201-804.
• Hole pattern ISO 4401-10-09-0-05 to ISO 4401, FKM seals for HL fluid, 1600 l/min maximum flow at 43.35 kg.

Applications

Valves like this work in presses, forging plants and power units with a shared return manifold. The Y path keeps the pilot stage pressure free and the characteristic stable. Control comes from an external amplifier card in the cabinet.

Manufacturer

Bosch Rexroth, material number R901174915. The type code 4WRZ32E1-520-7X/6EG24N9EK4/V states size 32, spool symbol E1, 520 l/min nominal flow and component series 7X. Characteristic curves, installation dimensions and the mounting pattern are given in data sheet RE 29115 and RE 07600-B.