Skip Ribbon Commands
Skip to main content




Product Description

The DRR25 Three-Way Rotary Valve provides water temperature control in heating and air-conditioning applications.

These valves are designed for accurate mixing control of supply water temperature and return-flow temperature. The sturdy construction and red brass material ensure long operating life and high reliability when used in combination with M6061/VMM and M7061/VRM actuators. The special inner form of the housing and the all-around changeable rotary plug allow the valve to be adapted to each possible application without having to drain the system. The DRR25 Three-Way Rotary Valve is especially designed for applications with sludge deposition and for panel heating (e.g. underfloor and ceiling heating systems) with oxygen diffusion. In combination with the distance-adjustable HE25 Extension, use in a wide range of prepiped systems is possible.

Technical Properties

Valve type 3-way rotary mixing, bypass
Medium type water or water-glycol mixture according to VDI 2035
Media temp. 2 ... 130 oC
Nominal pressure PN10
DN size 25 mm
Angle of rotation 90 o
Materials body red brass, inner parts chrome plated cast iron
Port connection external threads
Packing double O-ring sealing
Additional Descriptions
  • The housing is made out of red brass which enables especially the use in surface heating systems (floor or wall heating) with an oxygen diffusion problem
  • Chrome-plated plug for long life
  • Optimized characteristic for supply water temperature control
  • All around changeable rotary plug
  • Reliable and easy mounting of electrical actuators
  • Wide range of flow rates in two housing sizes
  • Compact design
  • Use for manifolds by accessory HE25 Extension
  • Thermal insulation package included