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Introducing the all new RA - DV Danfoss pressure independent dynamic radiat

Posted on: Wednesday, October 14, 2015

RA-DV is a series of pressure independent radiator valves, designed for use in 2-pipe heating systems together with all Danfoss range of RA2000 sensors. RA-DV dynamic valves are fitted with a flow limiting device for presetting of the maximum water flow. The valves are available with maximum water flow of 20 - 125 l/h.

The RA-DV has a built-in pressure regulator, which keeps the differential pressure at a constant level of 0.1 bar, thus maintaining the set flow. The valve bodies are manufactured from brass with a nickel plating. The gland seal pressure pin is chrominium steel and works in a lifetime lubricated O-Ring. The complete gland seal assembly can be replaced without draining down the system.

The TWA actuator is equipped with a visual position indicator to show the open or closed position of the valve. The TWA range covers actuators for 24 V (SELV) or 230 V supply in both normally closed (NC) or normally open (NO) versions (valve positions with no supply voltage to the actuator), and the 24 V TWA for RA valves also comes in a NC/S-version with an end-switch.

The TWA can be connected to the RA, RTD, RAVL and RAV-valves from Danfoss. Furthermore versions for valves with Heimeier/MNG/Oventrop M30 × 1.5 connection are available. Other valves must be verified individually to ensure correct valve closing measurement and valve top geometry.

Heat & Combustion Supplies

Unit E5, Southpoint Industrial Estate
Foreshore Road, Cardiff Bay, Cardiff CF10 4SP

Tel: +44 (0) 29 20 463345
Fax: +44 (0) 29 20 463346


Please refer to manufacturers documentation for
full safety specification and correct fitting.