Proportional Directional Valve 4WRZE25E1-325-7X/6EG24N9ETK31/A1D3V - Bosch Rexroth R978917738

When system pressure varies, the switching time of an internally piloted valve varies with it. The 4WRZE25E1-325-7X/6EG24N9ETK31/A1D3V prevents that with a built-in pressure reducing valve, still supplies itself internally and meters 325 l/min nominal flow at up to 350 bar.

Benefits

• Built-in pressure reducing valve keeps pilot pressure independent of system pressure.
• 325 l/min nominal flow in size 25, maximum flow 870 l/min.
• ±10 V command value on 24 VDC, on-board electronics, spool symbol E1, 3 switching positions.
• Internal pilot oil supply and internal pilot oil return, concealed manual override.
• FKM seals, ISO 4401-08-08-0-05 interface, 20.58 kg, UKCA conformity.

Technical data

Applications

The valve is used where working pressure swings widely over the cycle, for instance on presses with a rapid phase and a pressing phase. The pressure reducing valve keeps the switching time equal across the whole cycle. FKM seals allow higher oil temperatures than NBR.

Manufacturer

Bosch Rexroth, material number R978917738. The type code 4WRZE25E1-325-7X/6EG24N9ETK31/A1D3V states size 25, spool symbol E1, 325 l/min nominal flow and a ±10 V command value. Further details are given in data sheets RE 29115 and RE 07600-B.