Proportional Directional Valve 4WRKE25E220P-3X/6EG24ETK31/F1D3M - Bosch Rexroth R901406278

Symbol E blocks in mid position, so a load stands still even without a signal. This pilot-operated proportional directional valve in size 25 meters 220 l/min nominal flow from a 4...20 mA current command value and handles operating pressures up to 350 bar.

Advantages

• Symbol E isolates cylinder and pump from each other in mid position
• Nominal flow 220 l/min, up to 870 l/min maximum flow across four ports
• Linear characteristic curve with a fine control range around zero
• Command value 4...20 mA, tolerant of voltage drop on long cables
• Internal pilot oil supply and internal return, no extra pilot lines to route
• Connection diagram ISO 4401-08-08-0-05, 17.96 kg, NBR seals for HL hydraulic fluid

Applications

Used in presses, foundry equipment and large test rigs where an axis runs under a higher-level position control loop. The fine control range helps when heavy masses are started slowly. The on-board electronics take 24 VDC through a 7-pole connector.

Manufacturer

Bosch Rexroth, material number R901406278. The full type designation is 4WRKE25E220P-3X/6EG24ETK31/F1D3M.