DRR/HE
THREE-WAY ROTARY VALVE PN10 AND HE25 EXTENSION
PRODUCT DATA
FEATURES
APPLICATION
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 pre-piped systems is possible.
•Chrome-plated plug for long life-span
•Optimized characteristics 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
SPECIFICATIONS
Nominal static pressure |
10 bar; 1000 kPa |
Maximum pressure drop |
dependent on type (see table |
|
on page 3) |
Leakage rate |
< 1% of kVS |
Ports |
External threads with cap nuts |
Angle of rotation |
90 ° |
Packing |
Double O-ring lined |
Material body |
Red brass |
Material inner parts |
Chrome-plated cast iron |
Medium |
Heating water according to |
|
VDI 2035 (oxygen concentration |
|
less than 0.2 g/m3, pH 8...9.5) |
Water temperatures |
|
in the valve |
2...130 °C, non-condensing |
Weight |
dependent on type (see tables in |
|
section "Dimensions" on page 4) |
Flow characteristic |
equal percentage |
® U.S. Registered Trademark |
EN0B-0611GE51 R1108 |
Copyright © 2008 Honeywell Inc. • All rights reserved |
|
DRR/HE – PRODUCT DATA
OPERATION
The valve controls a mixing water temperature by means of a rotating plug. The plug adjusts the water flow of two inputs with two control curves. The required flow water temperature is achieved by adding a proportion of return water to the boiler hot water. The DRR has special control characteristics for optimal control performance.
SUITABLE ACTUATORS
torque |
|
OS no. |
|
OS no. |
|
OS no. |
[Nm] |
|
24 Vac float. |
|
230 Vac float. |
|
0/2...10V |
10 |
|
M6061A1013 |
|
M6061L1019 |
|
M7061E1012 |
20 |
|
M6061A1021 / |
|
M6061L1027 / |
|
M7061E1020 |
|
VMM20-24 |
|
VMM20 |
|
/ VRM20 |
|
|
|
|
|
MOUNTING
Adjustments for Mixing Applications
0 |
9 |
9 |
0 |
9 |
0 |
0 |
9 |
EN0B-0611GE51 R1108 |
|
|
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2 |
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