New: Servo-motorized valve with magnetic coupling

The new servo-motorized valve from A. u. K. Müller is completely media-separated and extremely wear-resistant thanks to it’s magnetic coupling.

A. u. K. Müller presents a unique product among motorized valves. The new servo-motorized valve moves the valve core by magnetic force. There is no direct connection between the linear actuator and the core. This means that the actuator is completely separated from the medium making it less prone to wear. The components in contact with the medium are reduced to a minimum.

The servo-motorized valve is suitable for setting up constantly variable controlled systems, for flow rates up to 18l/min at 1 bar, including a complete shut-off function.

Function of the magnetic coupling in connection with a servo-motorized valve

The servo-motorized valve combines the advantages of a proportional valve with those of a servo-controlled valve through the magnetic coupling, in which the medium pressure itself takes over part of the stroke work for opening and closing. The opening of the valve - and thus the fluid flow - can be continuously regulated via the stepper motor.


Areas of application for the servo-motorized valve

The valve is specially designed for applications in which the flow must be regulated continuously and the withdrawal quantity must be determined in a simple manner. Typical areas of application are in heating systems, in water heaters, but also in hot/cold beverage dispensers, in equipment for industry, agriculture, air-conditioning systems, dishwashers, washing machines, water treatment systems and many more. There are almost no limits to the areas of application.

In addition, we offer possible approvals according to KTW-BWGL, NSF 61, NSF 169 and ACS. We will be happy to inform you about further approval options for variant articles on request.

The essentials in brief

  • new servo-motorized valve from A. u. K. Müller
  • magnetic coupling instead of direct connection with the linear drive
  • extremely low wear with 100% media separation
  • shut-off & control valve combined in one product

Special features of the servo-motorized valve

The low-wear magnetic coupling of the drive combines the principles of a servo-controlled valve with those of a proportional valve. The volume flow can be continuously regulated via the stepper motor.

The servo-motorized valve is characterised by its high suitability for continuous use and can be operated up to a media temperature of 90 °C. The servo-motorized valve can be used in a wide range of applications. Due to the servo principle, no pressure surges occur in the piping system. Due to the use of top quality, high performance materials, the valves offer maximum functional reliability and a hygiene advantage, which is ensured by a 100% final test with air.

The servo-motorized valve can be used in a pressure range from 0.5 bar to 10 bar and has a Kv value of 14 l/m (DN 7) to 18 l/min (DN 9) at 1 bar.


Do you need a special variant of a valve? We will be happy to help you! Call us at +49 211 73 91-0 or simply use our contact form. We are happy to be there for you.


Technical inquiry

A. u. K. Müller GmbH & Co. KG

Dresdener Straße 162
D - 40595 Düsseldorf 

Telefon: +49 211 73 91-0
Telefax: +49 211 73 91-281

E-Mail: info(at)


A.K. Muller (UK) Ltd.
Unit 4, Brookside Business Park
Brookside Avenue, Rustington
GB - West Sussex BN16 3LP

Tel: +44 1903 788888
Fax:+44 1903 785817

E-Mail: valves(at)


A.K. Müller France
10 Avenue du Gué Langlois
Z.A.E du Gué Langlois
F-77600  Bussy Saint Martin

Telefon: +33 1 64 62 95 14
Telefax: +33 1 64 62 95 12

E-Mail: info(at)



A. u. K. Müller Shanghai
Rm25A, Huadu Mansion,
Zhangyang Rd. 838,
Shanghai, 200122, China

Telefon: +86 21 50 34 23 61
Telefax:  +86 21 58 20 42 12




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