DIRECTIONAL VALVES – HYDRAULICALLY OPERATED SPOOL

HD-WH SERIES

The Huade HD-WH series is a hydraulically operated spool directional valve, in which the spool is shifted by the pressure of an external pilot circuit rather than by solenoids or manual levers. This valve type is the solution for circuits where directional control must be integrated into a hydraulic or pneumatic logic without depending on electrical supply.

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Details

Available sizes: 6 (Cetop 3) – 10 (Cetop 5)
Configurations: 4/3-way and 4/2-way valve
Actuation: hydraulic (or pneumatic) control cylinders, one or two per valve
Maximum operating pressure: 315 bar
Maximum flow rate: 120 l/min
Compatible fluids: mineral oil (NBR seals); phosphoric ester (FPM seals)
Return: spring (automatic neutral position), without spring, detent (position maintenance)

12-MONTH WARRANTY

Benefits

Purely hydraulic actuation with no electrical components required
Integration in mixed hydraulic/pneumatic systems through control cylinders operable by pneumatic pressure
Triple spool return mode (spring, without spring and detent) allows the valve behaviour to be adapted to system requirements
Simplified circuit architecture in complex systems with no electrical interface required

Applciations fields

Application fields

Circuits with purely hydraulic sequence logic
Machinery with remote piloting via auxiliary circuit
Mixed hydraulic/pneumatic systems
Offshore applications and environments with electrical restrictions

Technical data sheet

Technical data sheet HD-WH SERIES HUADE

Code

Size

Q max (l/min)

P max (bar)

WH6

315

WH10

120

315

Code WH6

Size 6

Q max (l/min) 60

P max (bar) 315

Code WH10

Size 10

Q max (l/min) 120

P max (bar) 315

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Rexroth cross-reference

Huade HD-WH: the alternative to Rexroth 4WH6 and 4WH10 hydraulically piloted valves

The Huade HD-WH is a directional spool valve with hydraulic or pneumatic pilot, in NG6 (Cetop 3) and NG10 (Cetop 5). It is the alternative to Rexroth 4WH6 and 4WH10: same ISO 4401 interface, 4/3 and 4/2 configurations, spring, detent or no-spring return.

Series cross-reference

Rexroth series	Huade series	Size / interface	Max flow	Max pressure
4WH6	HD-WH6	NG6 – Cetop 3	60 l/min	315 bar
4WH10	HD-WH10	NG10 – Cetop 5	120 l/min	315 bar

Why choose it instead of the original

No electrical supply needed: ideal for hazardous areas and hydraulic control logics.
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

Spool symbol and number of positions
Pilot type: hydraulic or pneumatic, one or two cylinders
Return type: spring, detent or no spring
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 4WH6?

The Huade HD-WH6: NG6 / Cetop 3, up to 60 l/min and 315 bar.

And a Rexroth 4WH10?

The Huade HD-WH10: NG10 / Cetop 5, up to 120 l/min and 315 bar.

How do I get the equivalent code?

Send us the full Rexroth 4WH code from the nameplate: our technical team returns the equivalent HD-WH 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.