Honeywell DRU25-2.5, DRU25-4.0, DRU25-6.3, DRU25-10, DRU25-16 User Manual
DRR/HE
THREE-WAY ROTARY VALVE PN10 AND HE25 EXTENSION
PRODUCT DATA
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.
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 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 k
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/m
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
VS
3
, pH 8...9.5)
® 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.
MOUNTING
Adjustments for Mixing Applications
SUITABLE ACTUATORS
torque
[Nm]
10 M6061A1013 M6061L1019 M7061E1012
20
OS no.
24 Vac float.
M6061A1021 /
VMM20-24
OS no.
230 Vac float.
M6061L1027 /
VMM20
OS no.
0/2...10V
M7061E1020
/ VRM20
09 09
EN0B-0611GE51 R1108 2
09 90
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