Directional Spool Valve 4WEH16HD7X/6EG24N9EDL/B10 - Bosch Rexroth R901152557

The 4WEH16HD7X/6EG24N9EDL/B10 draws its pilot oil internally from the pressure gallery and returns it through a dedicated line to tank. The pilot stage therefore stays independent of back pressure in the common return. The valve passes up to 300 l/min at a maximum operating pressure of 280 bar.

Benefits

• Internal pilot oil supply saves the external feed line, while external pilot oil return keeps back pressure in the T gallery away from the pilot stage.
• Flow capacity of 300 l/min in size 16 at a weight of 9.25 kg.
• Spool symbol D with 2 switching positions and 4 ports for unambiguous end positions.
• Maximum operating pressure of 280 bar with NBR seals for hydraulic fluid HL.
• Subplate mounting to ISO 4401-07-07-0-05, the standard size 16 connection diagram.
• Solenoid actuation at 24 VDC through a 3-pole connector (2 + PE) to EN 175301-803.

Application

This combination of pilot routing is chosen when the P gallery carries enough pressure but the return line is under back pressure from filters or coolers. It drives pressing and lifting cylinders at flows up to 300 l/min. External pilot return keeps switching times stable even at high tank pressure.

Manufacturer

Bosch Rexroth, material number R901152557. Minimum pilot pressure, permissible tank pressure and performance limits are given in the data sheets Directional spool valves, pilot-operated (RE 24751) and Hydraulic valves and hydro- (RE 07600-B).