Proportional Directional Valve 4WRDE27V1-500P-6X/MXYWG/24A5 - Bosch Rexroth R901550677

When an axis has to meter around 500 l/min and manifold weight matters, this pilot-operated 4WRDE valve is worth a look: size 27 with connection diagram ISO 4401-08-08-0-05 weighs 19.5 kg and works up to 270 bar operating pressure. Spool position is fed back internally and corrected by the on-board electronics.

Benefits

• 500 l/min nominal flow from a valve of only 19.5 kg, with up to 1000 l/min possible through the valve.
• Connection diagram ISO 4401-08-08-0-05 instead of the larger patterns, which keeps the manifold compact.
• Operating pressure up to 270 bar with three switching positions and four ports.
• External pilot oil supply and external pilot oil return keep the pilot stage decoupled from the main circuit.
• Spool symbol V1 with a linear fine control range for even motion profiles.
• Internal position feedback and ±10 V command value on 24 VDC through a 7-pole connector (6 + PE) according to EN 175201-804.

Applications

This mix of high flow and a small mounting pattern is wanted in plastics machinery, lifting gear and test rigs with limited space on the manifold. The NBR seals suit HL mineral oil in the usual temperature window. For hotter oil or fire resistant fluids an FKM version is the better pick.

Manufacturer

Bosch Rexroth, material number R901550677. The valve mounts on a subplate to ISO 4401-08-08-0-05, which has to be sourced separately.