Bosch Rexroth | H-4WMM22D7X
H-4WMM22D7X/
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The H-4WMM22D7X/ valve belongs to the WM Directional Spool Valves series from Bosch Rexroth and directs hydraulic flow in automation circuits. Manual actuation is provided by a hand lever so an operator can shift the spool on demand. An actuating angle of 2 x 24.5° from center defines the lever travel range, and a spring return is built in to re-center the spool after use. Actuating force reaches 105 N, indicating the effort required to overcome the spring. Spool symbol D identifies the internal flow configuration available in each switching position. Nominal size 25 allows the body to mate with equally sized subplates. Four ports connect pressure, work, and tank lines required in common hydraulic schematics. A DIN 24340 Form A porting pattern matches widely used mounting interfaces on industrial machinery.
The hydraulic interface follows ISO 4401, enabling replacement with valves of the same standard. Maximum operating pressure at ports a, b, and p is rated to 350 bar, while the tank port endures up to 250 bar during return flow. A leakage oil port designated Y channels internal seepage, and this drain must be connected when tank pressure exceeds 160 bar. The housing supports a maximum flow of 450 l/min so large actuators can be supplied without excessive pressure drop. Oil cleanliness should meet ISO 4406 class 20/18/15 to protect the precision spool fit. Installation position is optional, giving designers freedom in manifold orientation. These features define the H-4WMM22D7X/ for high-pressure, high-flow directional control tasks.
Technical Specifications
Actuating Angle From Center
2 x 24.5°
Actuating Force (spring Return)
105 N
Actuation Type
Hand Lever
Cleanliness Class
ISO 4406 20/18/15
Installation Position
Optional
Interface Standard
ISO 4401
Leakage Oil Port
Y
Max Operating Pressure (a/b/p)
350 bar
Max Tank Port Pressure (t)
250 bar
Maximum Flow
450 l/min
Number Of Ports
4
Porting Pattern
DIN 24340 Form A
Return Type
Spring Return
Size (ng)
25
Spool Symbol
D
Tank Pressure For Drain Requirement
160 bar
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