Fast and Simple Hydronic Balancing With New Danfoss Dynamic Valve

Fast and Simple Hydronic Balancing With New Danfoss Dynamic Valve

Gareth Ash, Marketing Manager at Danfoss, explains the technical innovation behind the new Danfoss RAS-B2 Dynamic ValveTM, which offers installers a simple way to ensure a system is correctly balanced in a fraction of the time it would normally take.

Danfoss is committed to developing products that make life easier for installers and our new RAS-B2 Dynamic ValveTM reflects this commitment. So what’s different about this latest addition to the Danfoss TRV family? Unlike other TRVs, which only act as flow limiters, the RAS-B2 features a differential pressure controller. This ensures pressure drops over the valve remain at a constant level and flow through the valve is maintained at both full (winter) and partial (autumn/spring) loads. Additionally, pre-setting of the desired flow is done on the valve, rather than on the lockshield, which it is estimated could save installers up to two hours of valuable working time.

Installer App
As well as enabling fast and easy hydronic dynamic balancing of domestic systems the RAS-B2 is also featured on the Danfoss Installer App. Using this time-saving tool, installers can calculate, record and document the correct flow and subsequent setting for each radiator on their smartphone or tablet.

Currently the only 100% pressure independent valve demonstrating a constant flow in all conditions, the Danfoss RAS-B2 ensures each radiator receives an equal flow of hot water. This not only optimises end-user comfort but also means that the return temperature is lower (condensing boiler efficiency is best at below a return temperature of 55o C) and the pump can run at a lower speed.

Research suggests that between 80% and 90% of heating systems in Europe are unbalanced, which as any heating professional knows can result in the common complaints of noisy radiators and uneven heating. To address this, updates to Part L in 2021 are expected to include an increased legal requirement to prove that domestic heating systems are well balanced. Modern, high efficiency controls that meet the new standards will also be required as part of a boiler replacement, so fitting simple valves will no longer be an option for installers.

The new RAS-B2 Danfoss Dynamic ValveTM offers installers an easy, future-proof solution that will satisfy their customers’ needs today and comply with forthcoming regulations to make existing UK homes more energy efficient as we move towards the ultimate goal of Net Zero in 2050. For more information visit