Proportional Directional Valve 4WRZE16E3-150-7X/6EG24N9EK31/A1M - Bosch Rexroth R901523864

A control loop that receives its command as plus/minus 10 V from a PLC analogue card finds its matching actuator in this valve. The 4WRZE16E3-150 handles 150 l/min nominal at size 16 and passes up to 460 l/min at peak. This version has no pressure reducing valve in the pilot stage, pilot oil is taken internally from the P channel and returned to tank through an external line.

Benefits

• 150 l/min nominal flow with a valve limit of 460 l/min.
• Command value plus/minus 10 V, driven straight from any common analogue output card.
• Spool symbol E3 with 3 switching positions, all 4 ports interconnected in mid position.
• External pilot oil return keeps back pressure in the return line away from the pilot stage.
• Concealed manual override allows commissioning and emergency motion without a command signal present.
• 350 bar operating pressure at a valve weight of only 12 kg.

Applications

The valve fits power units with a central pilot oil circuit, for example on presses, test benches and lifting gear. The E3 mid position links A, B, P and T and leaves the cylinder unpressurised at standstill, which helps during manual work on the machine. Where a closed centre is required instead, Bosch Rexroth offers the 4WRZ(E) series with other spool symbols.

Manufacturer

Manufactured by Bosch Rexroth, material number R901523864. The 2 attached manufacturer datasheets give characteristic curves, performance limits and mounting dimensions.