Honeywell DRU32-10, DRU32-16, DRU32-25 User Manual

DRU/HE

THREE-WAY ROTARY VALVE PN10 AND HE25/32 EXTENSION

PRODUCT DATA

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.

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 k

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
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
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.

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

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09 90