1. Safety guidelines
1. Follow the installation instructions.
2. Use the appliance
• according to its intended use
• in good condition
• with due regard to safety and risk of danger
3. Note that the appliance is exclusively for use in the
applications detailed in these installation instruc-
tions. Any other use will not be considered to com-
ply with requirements.
4. All assembly operations should be carried out by
competent and authorised personnel.
5. Immediately rectify any malfunctions which may in-
fluence safety.
2. Functional description
The pressure reducing valve reduces the pressure on
the inlet side (admission pressure) to the level of the
desired pressure on the outlet side (outlet pressure) in
individual cases.
The pressure reducing valve functions on a force
equalisation principle. The force of a diaphragm opera-
tes against the spring force of the regulating valve. If
the outlet pressure and therefore diaphragm force fall
because water is drawn, the then greater force of the
spring causes the valve to open. The outlet pressure
then increases until the forces between the diaphragm
and the spring are equal again.
The inlet pressure (admission pressure) has no influ-
ence on the regulating valve of the pressure reducing
valve. Inlet pressure fluctuation does not influence the
outlet pressure, thus providing inlet pressure
balancing.
3. Application
Medium
Water and other non-aggressive
fluids, compressed air* and nitro-
gen*
Admission pres-
max. 16 bar/40°C
sure
max. 25 bar/70°C
Outlet pressure 1,5-6 bar
*For a PED appliance approval, this product, as a part of the ap-
pliance, must also be certified.
• WARNING!
In applications where UV radiation and sol-
vent vapours are present, use the SM06T
brass filter bowl!
MU1H-1002GE23 R0804
GB
4. Technical data
Operating
temperature
Minimum pressure
drop
Connection sizes
5. Scope of delivery
The pressure reducing valve consists of:
• Housing with manometer connection on both sides
(manometer ☞ accessories)
• Screw connections
• Valve insert incl. diaphragm and valve seat
• Spring hood with adjuster knob and adjustment
scale
• Adjustment spring
• Filter bowl
• Fine filter with mesh size approx. 0.16 mm
• Venturi nozzle (only 1 1/4" and 2")
6. Assembly
6.1 Installation
It is necessary during installation to follow the installa-
tion instructions, to comply with local requirements and
to follow the codes of good practice.
The installation location should be protected against
frost and be easily accessible.
Isolating valves should be fitted on each side of the
pressure reducing valve.
The device downstream should be protected by means
of a safety valve (installed downstream of the pressure
reducing valve).
6.2 Assembly instructions
• CAUTION!
When using soldering connections, do not
solder the connections together with the
pressure reducing valve!
High temperature will irreparably damage
important internal working components!
1. Throughly flush pipework.
2. Install pressure reducing valve.
• Fit venturi nozzle (1 1/4" and 2" only)
• Install in horizontal pipework with filter bowl di-
rected downwards
• Note flow direction (indicated by arrow, fig. 1)
• Install without tension or bending stresses
• provide a straight section of pipework of at least
five times the nominal valve size after the filter
combination
3. Setting outlet pressure (☞ chapter 7).
6
With clear filter bowl, max. 40°C
With brass filter bowl, max. 70°C
1 bar
1/2" to 2"
Honeywell GmbH