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 |
| Kvs value |
4 |
| Medium type |
water or water-glycol mixture according to VDI 2035 |
| Media temp. |
2 ... 130 oC |
| Nominal pressure |
PN10 |
| DN size |
25 mm |
| Max. delta P |
100 kPa |
| Torque for max. delta P |
20 Nm |
| 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
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