Proportional Directional Valve 4WRZE25E325-7X/6EG24N9EK31/A1V - Bosch Rexroth R978916578

At 325 l/min nominal flow this valve sits at the upper end of size 25, with a flow limit of 870 l/min at 350 bar. Pilot oil is tapped internally, the pilot drain runs to the outside. On-board electronics close the loop on main spool position.

Benefits

• 325 l/min nominal flow with 870 l/min flow limit at 350 bar
• Internal pilot oil supply saves a separate pilot line, pilot oil return led outside
• Analog command value plus to minus 10 V, 24 VDC supply, wired through a connector, 7-pole (6 + PE)
• Spool symbol E with concealed manual override, 3 switching positions
• FKM seals for HL fluid, UKCA to SI2016/1091, mass 20.26 kg

Applications

The high nominal flow suits forging presses, curing presses and forming lines with large cylinders. Internal pilot supply means one port less to plumb on the manifold. The external pilot drain stays necessary whenever back pressure builds in the tank gallery.

Manufacturer

Material number is R978916578. Performance limit diagrams as well as step responses appear in Bosch Rexroth data sheet RE 29115.