Valves for heat pumps, control valves for inverters

Heat pumps are the ultimate in current sustainable and renewable heating and air conditioning of buildings.

To ensure that heat pumps operate in an energy-efficient and material friendly manner, especially in the autumn and spring, the speed of the compressor and thus the output of the heat pump is controlled by an inverter. This must be cooled reliably and controllably during operation. The proportional valve from the 10.004.126 ds series, among others, is used for this responsible task.


What is special about A. u. K. Müller valves for heat pumps is that they are not made of non-ferrous metals, but of high-performance plastics. Not only do they exhibit special chemical resistance to the water/coolant mixture, but their reduced conductivity means that they have less influence on the media temperature.  In addition, the control valves offer good reproducibility of the flow rate and thus ensure precise cooling. Low power consumption - as well as a long service life - is a basic requirement for a sustainable product. Also, A. u. K. Müller proportional valves prevent pressure surges in the piping system.

The most important features in brief

  • Chemical resistance to the water/coolant mixture
  • Good reproducibility of the flow rate and, consequently, cooling
  • Reduced heat loss through the valve
  • High functional reliability due to the use of high-quality materials
  • High continuous serviceability
  • Low power requirement
  • No pressure surges in the piping system


Do you have any questions about A. u. K. Müller control valves?

With the information about the series of our control and regulating valves we would like to introduce our core products and give you application examples. In addition, A. u. K. Müller as a developer and producer offers you a large number of customer-specific variants. Therefore we are looking forward to your individual inquiry.

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 788 888
Fax:+44 1903 785 817

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
Rm26D, Huadu Mansion,
Zhangyang Rd. 838,
Shanghai, 200122, China

Telefon: +86 21 58 20 40 80
Telefax:  +86 21 58 20 42 12

E-Mail: info(at)



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