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3.5 Dimensional drawings
G 5/8
G 5/8
45
P = pressure (loading side)
P
S
139
Fig. 1
Multi-function valve, dimensional drawings
4. Installation
Warning
The valve must only be installed by authorised and
qualified personnel!
Warning
When working with chemicals, the accident
prevention regulations applicable at the installation
site must be applied!
Observe the chemical manufacturer's safety data
sheets when handling chemicals!
Warning
When working on the product, or connections and
lines, always wear protective clothing
(e.g. safety goggles and gloves)!
The system must be unpressurised!
Only operate the system if all lines are connected
correctly!
The multi-function valve is designed as a three-way valve.
It has an inlet (A), an outlet on the discharge side (B), and an
unpressurised relief outlet (C). See fig. 2.
The multi-function valve can be fitted directly to the discharge
valve of the dosing pump.
Warning
Observe the flow direction (indicated by an arrow on
the valve housing).
S = safety (relief side)
B
C
A
Fig. 2
Connections
1. Screw the inlet (A) onto the pump discharge valve.
2. Connect the discharge line to the outlet (B).
3. Connect the relief line to the relief outlet (C), and direct the
unpressurised liquid to the tank or a suitable overflow.
4. Retighten screws on housing cover after 72 operating hours.
Max. torque: 2.5 Nm.
5. Settings
Warning
Settings on the valve must only be carried out by
authorized personnel!
The valve working pressures of the multi-function valve are
factory-set to the values specified in section
valve
data.
During operation, the valve working pressures depend on various
factors, e.g. the flow, the stroke frequency of the pump, or the
counterpressure. If a more precise setting is required, the valve
must be adapted to the local conditions. For media with
a viscosity higher than that of water (1 mPas), the valve working
pressures increase.
5.1 Setting the relief pressure
Warning
Danger of injury! Never set the relief pressure higher
than the maximum permissible operating pressure of
dosing system and dosing pump!
If the factory-set pressure of 10 + 2 bar or 16 + 2 bar is to be
changed, proceed as follows (see fig. 3).
Do not bend or break the small pin on the inside of
the protective cap. A broken pin will make the
Caution
corresponding function (deaeration/draining)
impossible.
1. Remove the protective cap from the green knob
(pressure relief side).
2. Press the safety bolts against each other with a pair of
needle-nosed pliers.
3. Remove the deaeration knob.
4. To increase the relief pressure, use a pair of needle-nosed
pliers to turn the threaded thrust part clockwise into the
housing, until the required pressure is reached.
5. To reduce the relief pressure, use a pair of needle-nosed
pliers to turn the threaded thrust part counterclockwise out of
the housing until the required pressure is reached.
6. Refit the deaeration knob. Both safety bolts must engage.
7. Refit the protective cap.
Pos. Description
A
Valve inlet
B
Valve outlet
C
Relief outlet
3.4 Multi-function
7
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