Danfoss launches new generation rotary valves for faster, simpler heating installations

Danfoss launches new generation rotary valves for faster, simpler heating installations

Heating controls specialist, Danfoss, has launched a new generation of three and four way rotary valves, specially designed to enable easier installation and commissioning for heating installers and provide reliable, energy-efficient operation for their customers. The new RVA rotary valves from Danfoss can be used to regulate flow in all types of light commercial heating systems, from gas boilers to heat pumps. The range includes cast iron and brass DZR (Dezincification Resistant) rotary valves in a choice of sizes to suit different applications. All RVA rotary valves have an easy-to-view position indicator, ergonomically-designed handle, and the lowest internal leakage rate in their class. With this latest expansion of its extensive range, Danfoss now claims to have the UK heating market’s first ‘one stop shop’ for Motorised Control Valves (MCV).

With an advanced valve design, the new Danfoss RVA rotary valves have the lowest internal leakage in their class for energy saving performance. Maximum leakage levels for the RVA 3-way brass valve, for example, are just 0.02% of flow (diverting) and 0.05% of flow (mixing).

Saving installers – time and cost – on site was a key objective for Danfoss during the development of the RVA rotary valve. To assist installation and commissioning, each valve has a helpful position indicator, which is visible from the top or from the side of the valve, with or without the actuator mounted. In addition, Danfoss has designed the new valves with an ergonomic handle that is easy to use and ensures better grip.

In developing the RVA range, Danfoss also recognised that many heating installers like the option of cast iron or brass rotary valves. In addition to the brass HRB 3/4 valve in sizes DB15 to DN50 for nominal pressure PN10, the RVA range includes the cast iron HFE 3, sized from DN20 to DN150 for nominal pressure PN6, and HRE 3/4 cast iron valves in sizes from DN20 to DN50 for nominal pressure PN6.

Danfoss Marketing Director, Bjorn Sejr Nielsen, comments: “Although cast iron has been the traditional type of rotary valve, there’s been a move towards brass in recent years. Lots of older heating systems will have cast iron valves, so our new RVA cast iron products offer installers a simple, energy saving upgrade for existing systems, without the need for alterations to pipework.”

The new RVA Rotary Valves are designed for use with Danfoss AMB 162 and 182 actuators with a nominal voltage of 230V, 50/60Hz and a rotation angle of 90o. Full product specifications for all Danfoss Rotary Valves and Actuators are available to view or download at

Danfoss is a leading manufacturer of world-class heating controls, from programmers and thermostats to TRVs and motorised control valves, with factories in the UK and Denmark. The company’s extensive product range is supplied through a national network of stockists. As part of its commitment to improving the knowledge and profitability of its customers, Danfoss offers a programme of installer training courses and CPD seminars, covering all aspects of domestic central heating techniques. A comprehensive range of installer support services is also available, including the Danfoss Assist mobile website at, specially designed for viewing on a smartphone display screen and providing instant access to installation guides, handy helpline numbers and links to the latest offers from Danfoss. For more information visit