Bosch Rexroth | H-4WEH25J6X6EG24N9S2DAL
H-4WEH25J6X/6EG24N9S2DAL
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The H-4WEH25J6X/6EG24N9S2DAL valve is manufactured by Bosch Rexroth for the WEH Directional Spool Valves series. It directs hydraulic flow in automated systems by means of a solenoid-controlled pilot stage. The nominal size NG25 defines the interface dimensions and flow cross-section. As a 4/3-way design, it offers four ports and three switching positions. The spool follows the J symbol, establishing a specific overlap pattern during operation. A spring-centered arrangement recenters the element when pilot pressure is removed, and at least 13 bar pilot pressure is needed to shift it. The pilot line may reach 250 bar. A concealed N9 manual override allows local actuation, and the coil operates on 24 V DC.
The valve withstands a continuous 350 bar on ports P, A, and B, enabling use in high-pressure circuits. Back-pressure on the tank port is permitted up to 250 bar, and an external drain connection marked Y can be loaded to 210 bar. With flow characterized by the J spool, the unit passes up to 520 l/min at 350 bar without exceeding permissible pressure drop. Connection to a manifold or subplate follows the ISO 4401-08-08-0-05 pattern to ensure interchangeability with other NG25 components. Hydraulic cleanliness must reach ISO 4406 class 20/18/15 to avoid accelerated wear. Ambient temperature around the assembly may rise to 50 °C, while the oil flowing through the ports can reach 80 °C without impairing function.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Coil Voltage
24 V DC
Manual Override
Concealed (N9)
Max Ambient Temperature (nbr)
+50 C
Max Flow (symbol J, 350 Bar)
520 l/min
Max Oil Temperature (ports, Nbr)
+80 C
Max Operating Pressure (p, A, B)
350 bar
Max Pilot Pressure
250 bar
Max Pressure (t Port)
250 bar
Max Pressure (y External, Dc)
210 bar
Min Pilot Pressure (spring-centered)
13 bar
Nominal Size
NG25
Porting Pattern
ISO 4401-08-08-0-05
Spool Configuration
Spring-Centered
Spool Symbol
J
Valve Type
4/3-Way
1620 Old Apex Road
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