Product Description
MD15-HE, MD15-R-HE
Q
Page 8 / 14
3.09-20.125-01-EN | 2019-08-19
Valve Installation
!
CAUTION
The valve may only be installed by qualified technicians. In addition to the generally applicable instal-
lation guidelines, the following items are to be observed:
■
The pipeline system and the fixture interior must be free of foreign objects. In the event of contam-
inated media, dirt collectors are to be inserted upstream of the valves with fine screens, mesh width
0.25 mm.
■
There must be no tension between the valve and the pipeline connection.
■
To avoid eddy formations in the valve body, the valve should be installed in a straight section of the
pipe. A distance of 10 times the nominal diameter is recommended between the valve flange and
manifold or other similar parts.
■
The installation location is to be selected so that the ambient temperature at the actuator is kept
between 0 °C–+50°C.
■
When carrying out installation, the permissible max. pressure difference
p and the specified
direction of flow must be observed (see table in "Types" section, as well as the "Valve Principle").
■
The three-way valves are to be used as mixing valves. Pay attention to the direction of flow (see
fig. "Valve Principle").
■
Once the valve is installed, make sure the ball in the valve seating can be moved easily by pushing
in the valve stem.
■
To install the actuator and remove the housing cover, approx. 170 mm of free space is required
above the actuator.
■
Observe the direction arrow on the valve body. Inverting the direction of flow impairs control
behavior.
