Bosch Rexroth | H-4WEH25E6X6EG24K4QM0G24V
H-4WEH25E6X/6EG24K4QM0G24/V
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The H-4WEH25E6X/6EG24K4QM0G24/V directional spool valve is produced by Bosch Rexroth for the WEH Directional Spool Valves series and directs hydraulic flow in automated machinery through electro-hydraulic actuation, where a solenoid-driven pilot applies hydraulic force to the main spool. It is built in size NG25 so it integrates with 25 mm port manifolds common in power units. A 4-way configuration with spool symbol E provides four service ports for bidirectional cylinder or motor circuits. The pilot valve follows type 6E and operates on a 24 V DC supply, letting programmable controllers energize the coil without intermediate relays. The same 24 V DC level feeds the position switch, giving electrical confirmation that the spool is in its rest position as defined by monitoring code QM0. Electrical leads are terminated with a DIN EN 175301-803 K4 connector, allowing fast maintenance swaps while preserving wiring integrity.
During service the main stage supports a maximum flow of 700 l/min when the pressure drop across symbol E paths is kept at or below 280 bar, while the housing withstands a continuous operating pressure of 350 bar. The pilot circuit tolerates up to 250 bar and needs at least 13 bar to overcome the spring-centered bias, with a pilot flow of 35 l/min helping achieve consistent switching times. Port Y, used for external pilot return, handles pressures up to 210 bar so back-pressure in the drain line does not hinder spool movement. FKM seals resist mineral oils and higher temperatures, extending service life in demanding duty cycles. These hydraulic limits, combined with standardized electrical interfaces and feedback functions, support reliable directional control in high-pressure, high-flow automation systems.
Technical Specifications
Actuation
Electro-Hydraulic
Electrical Connection
DIN EN 175301-803 (K4)
Max Flow (symbol E, ≤280 Bar)
700 l/min
Max Operating Pressure
350 bar
Max Pilot Pressure
250 bar
Min Pilot Pressure (spring-centered)
13 bar
Pilot Flow For Switching Time
35 l/min
Pilot Valve Supply Voltage
24 V DC
Pilot Valve Type
6E
Port Y Max Pressure (external Return)
210 bar
Position Switch Voltage
24 V DC
Seal Material
FKM
Size
NG25
Spool Position Monitoring
Rest Position (QM0)
Spool Symbol
E
Way Configuration
4-Way
1620 Old Apex Road
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