Proportional Directional Valve 4WRZE25W6-220-7X/6EG24N9EK31/F1D3V - Bosch Rexroth R901144248

A press or a feed drive of size 25 calls for flow rates around 220 l/min, metered steplessly and repeatably. This pilot-operated proportional directional valve does exactly that up to 350 bar operating pressure and accepts the command value as a 4-20 mA loop that stays stable even over long runs from the control cabinet.

Benefits

• 220 l/min nominal flow, with up to 870 l/min possible on the valve side
• Operating pressure up to 350 bar with spool symbol W6, three switching positions across four ports
• Command value as a 4-20 mA current rather than a voltage, so cable resistance introduces no signal error
• On-board electronics, 24 VDC through a 7-pole connector (6 + PE) to EN 175201-804
• Pilot oil taken internally, return external through Y, FKM seals for HL hydraulic fluid

Application

Typical duty covers press axes, injection moulding machines and test rigs where a position or velocity controller sets the valve opening. The external pilot oil return pays off wherever tank pressure in the main circuit fluctuates. The ISO 4401-08-08-0-05 mounting pattern fits any standard size 25 subplate.

Manufacturer

Bosch Rexroth, material number R901144248. Characteristic curves, installation dimensions and tightening torques are documented in data sheet RE 29115, the range overview in RE 07600-B.