DIRECTIONAL VALVES – MECHANICALLY OPERATED SPOOL

HD-WMU/R SERIES

The Huade HD-WMU/R series is a range of mechanically operated spool directional valves, designed for circuits where the command is activated directly by a moving element of the machine. These valves eliminate the need for solenoids and electrical supply through roller actuation (WMR) or plunger actuation (WMU).

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Details

Available sizes: 6 (Cetop 3) and 10 (Cetop 5)
Actuation variants: WMR (roller lever, for cam/limit switch) · WMU (stem plunger, for linear actuator)
Configurations: 4/3-way and 4/2-way valve — 19 standard spool configurations
Mechanical actuation
Maximum operating pressure: 315 bar
Maximum flow rate: 120 l/min
Roller assembly rotatable by 90° to adapt to the cam approach direction
Compatible fluids: mineral oil (NBR seals); phosphoric ester (FPM seals)
Return: spring (automatic neutral position)

24-MONTH WARRANTY

Benefits

No electrical supply required through roller or stem mechanical actuation, reducing failure points and simplifying the system
High adaptability to machine architecture through the roller assembly, rotatable up to 90° from the standard position

Applciations fields

Application fields

Machine tools
Mechanical and hydraulic presses
Woodworking machinery
Transfer lines and mechanical automation
Packaging and wrapping machinery
Material handling equipment

Technical data sheet

Technical data sheet HD-WMU/R Huade

Code

Size

Q max (l/min)

P max (bar)

WMU/R6

315

WMU/R10

120

315

Code WMU/R6

Size 6

Q max (l/min) 60

P max (bar) 315

Code WMU/R10

Size 10

Q max (l/min) 120

P max (bar) 315

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Rexroth cross-reference

Huade HD-WMU/R: the alternative to Rexroth 4WMU and 4WMR mechanically operated valves

The Huade HD-WMU/R is a mechanically operated directional spool valve with roller lever (WMR) or plunger (WMU), in NG6 and NG10. It is the alternative to Rexroth 4WMR and 4WMU: same ISO 4401 interface, 19 standard spool configurations, spring return.

Series cross-reference

Rexroth series	Huade series	Size / interface	Max flow	Max pressure
4WMR6 / 4WMU6	HD-WMU/R6	NG6 – Cetop 3	60 l/min	315 bar
4WMR10 / 4WMU10	HD-WMU/R10	NG10 – Cetop 5	120 l/min	315 bar

Why choose it instead of the original

Roller rotatable by 90° to match the cam approach direction: end-of-stroke and safety logics without electrical signals.
24-month warranty and every unit tested on our test bench in Gallarate (Italy) before shipment.
Delivery: 24–48 hours for stock items, 2 weeks standard.
Technical support: our engineers convert your current code and check the installation with you.

What we check before confirming the replacement

Actuator: roller lever (WMR) or plunger (WMU)
Size and spool symbol
Roller orientation
Seals: NBR or FPM

Send us your Rexroth code

We return the equivalent code, checked by our technical team, with price and delivery time.

Get the equivalent code

Frequently asked questions

Which valve replaces a Rexroth 4WMR?

The Huade HD-WMU/R in the roller-lever version (WMR), in NG6 or NG10.

And a Rexroth 4WMU with plunger?

The HD-WMU/R in the plunger version (WMU), on the same ISO 4401 subplate.

How do I get the equivalent code?

Send us the full Rexroth 4WMU / 4WMR code from the nameplate: our technical team returns the equivalent HD-WMU/R code, checked for size, version and seals.

Rexroth, Voith and the series names mentioned are trademarks of their respective owners and are used only to indicate compatibility. Hydraut Europe S.r.l. is not affiliated with these companies. Interchangeability is confirmed code by code by our technical team.