Directional Spool Valve 4WEH16HD7X/OF6EG24N9ES2K4/B10 - Bosch Rexroth R900971896

Back pressure in the tank line acts on the pilot stage whenever its return ends there. The 4WEH16HD7X/OF6EG24N9ES2K4/B10 takes its pilot oil internally from port P and drains the pilot oil return through a dedicated external line, while the main spool directs up to 300 l/min at a maximum of 280 bar.

Benefits

• Internal pilot oil supply, external pilot oil return, the pilot drain stays clear of back pressure in the tank line.
• 300 l/min across four ports in the ISO 4401-07-07-0-05 connection diagram.
• Maximum operating pressure of 280 bar with NBR seals and HL hydraulic fluid.
• Solenoid actuation at 24 VDC, two switching positions, spool symbol D.
• 10.8 kg in size 16, subplate mounting on the existing control block.

Technical data

Applications

This pilot arrangement suits plants with long return paths, return filters or several valves sharing one tank line, such as large presses and test rigs. The external pilot drain carries the pilot oil to tank on its own path and keeps switching times steady even at raised return pressure. The pilot stage still needs no separate source, since it feeds off port P.

Manufacturer

Bosch Rexroth, material number R900971896. Data sheet RE 24751 states permissible flows, switching times and the limits of the pilot stage, and RE 07600-B places the valve within the programme.