Directional Spool Valve H-4WEH25HD6X/OF6EG24N9K4/B10 - Bosch Rexroth R901046521

At 700 l/min a directly actuated valve is out of range, so size 25 calls for a pilot-operated spool valve. The H-4WEH25HD6X/OF6EG24N9K4/B10 runs with external pilot oil supply and external pilot oil return, carries a maximum operating pressure of 350 bar and weighs 17.58 kg.

Benefits

• 700 l/min flow at 350 bar maximum operating pressure in size 25
• External pilot oil supply and external pilot oil return, so pilot oil does not come from port P
• 24 VDC solenoid actuation wired through a 3-pole connector (2 + PE) to EN 175301-803
• ISO 4401-08-08-0-05 mounting pattern, 4 ports, 2 switching positions
• 17.58 kg, NBR seals matched to HL hydraulic fluid

Application

Size 25 is chosen where a consumer needs more oil than a directly actuated size 10 valve can deliver, for example in presses, injection moulding machines and heavy lifting gear. External pilot oil supply suits circuits in which working pressure at port P drops below the pilot pressure. A subplate to ISO 4401-08-08-0-05 is all the swap requires.

Manufacturer

Bosch Rexroth, material number R901046521. Two manufacturer documents are available. Characteristic curves, switching times and installation dimensions are given in the data sheet.