DRU/HE
THREE-WAY ROTARY VALVE PN10 AND HE25/32 EXTENSION
APPLICATION
The DRU25/32 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 ensures 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. In combination with the distance-adjustable HE25/32 Extension, use in a wide range of pre-piped systems is possible.
PRODUCT DATA
FEATURES
•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 HE25/32 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 |
Cast iron (GG20) |
Material inner parts |
Chrome-plated cast iron |
Medium |
Heating water according to VDI |
|
2035 (oxygen concentration less |
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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-0608GE51 R0108 |
Copyright © 2008 Honeywell Inc. • All rights reserved |
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DRU/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 DRU has special control characteristics for optimal control performance.
SUITABLE ACTUATORS
torque |
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OS no. |
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OS no. |
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OS no. |
[Nm] |
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24 Vac float. |
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230 Vac float. |
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0/2...10V |
10 |
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M6061A1013 |
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M6061L1019 |
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M7061E1012 |
20 |
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M6061A1021 / |
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M6061L1027 / |
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M7061E1020 |
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VMM20-24 |
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VMM20 |
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/ VRM20 |
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MOUNTING
Adjustments for Mixing Applications
0 |
9 |
9 |
0 |
9 |
0 |
0 |
9 |
EN0B-0608GE51 R0108 |
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2 |
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