Proportional Directional Valve 4WRZ25E325-7X/6EG24N9EK4/D3M - Bosch Rexroth R900970810

Where the main circuit exceeds pilot pressure and the tank line carries back pressure at the same time, the valve needs both provisions. The 4WRZ25E325-7X/6EG24N9EK4/D3M reduces internally and relieves through a dedicated Y line, at 325 l/min nominal flow.

Benefits

• Pressure reducing valve in the pilot stage, the supply may come internally from the main circuit.
• External return through the Y line, back pressure in the tank channel does not act on pilot control.
• 325 l/min nominal flow, flow up to 870 l/min, spool symbol E in size 25.
• 20.44 kg weight, 350 bar maximum operating pressure, NBR seals, HL hydraulic fluid.
• Concealed auxiliary actuation, supplied at 24 VDC through a 7-pole (6 + PE) plug to EN 175201-804.

Applications

Such conditions are found on large presses with a shared return manifold and high working pressure. The valve manages there with a single additional line, the unpressurised Y line. Pilot pressure settles independently of working pressure.

Manufacturer

Bosch Rexroth, material number R900970810. Reduced pilot pressure and permitted back pressure are given in data sheet RE 29115, with RE 07600-B for further reading.