pressure reducing valve pressure reducing valve

pressure reducing valve pressure reducing valve
NOT SUITABLE FOR BELOW GROUND INSTALLATION
NOT SUITABLE FOR BELOW GROUND INSTALLATION
Art.2864-2866-2868-2870 1/2”- 3/4”
Art.2865-2867-2869-2871 1/2”- 3/4”
INSTALLATION
AS 1357.2
Lic.WMKA20344
PRESSURE REDUCING VALVE
When FAR reducing valves are installed in a new application, it is essential
that the system is clean and free of debris, it is recommended that a strainer
be located upstream of the reducing valve, even though a small strainer is
already built into the cartridge. The FAR pressure reducing valve can be
installed at any position and it is normally located between two shut-off points,
one upstream and one downstream. These are useful for easier periodic
maintenance. The flow direction is indicated by the arrow on the reducing
valve body. For those installations in which the boiler is located just after
the pressure reducing valve, use of an expansion vessel is recommended
in order to absorb any increase in pressure. Rising temperature causes fluid
to expand, thus resulting in increased pressure in the section between the
pressure reducing valve and the boiler.
INSTALLATION
EXPANSION
VESSEL
BOILER
PRESSURE
REDUCING VALVE
USES
SECTION SUBJECT TO PRESSURE INCREASE
DOWNSTREAM PRESSURE CALIBRATION
All pressure reducing valves are calibrated to 500kPa. The pressure level
reached by the system can be seen by means of a pressure gauge, which
can be fitted to the pressure reducing valve, by removing the knurled plug,
or mounted directly onto the pipe downstream of the pressure reducing
valve. In order to change the pressure value it is essential to close the
shut-off valve downstream of the reducing valve, so as to read the static
pressure of reducer. Then, once the plug (1) has been removed by means
of a screwdriver, set the pressure value desired, reading it on the pressure
gauge, by using the 5mm Allen Key on the regulating screw (2) to either
increase the pressure by turning clockwise, or decreasing the desire value
of pressure by turning counter-clockwise.
+ clockwise:
- counter-clockwise:
+
downstream pressure level increases
downstream pressure level decreases
The presence of a small strainer (built in to the cartridge 7) inside the reducing valve requires regular maintenance, mainly in case of systems
working with water rich in debris or with no strainer immediately after the meter. Therefore the FAR pressure reducing valve has an easy system
for the extraction of the cartridge (7). To carry out this operation you have to:
2. In order to take tension
off the spring, turn the nut
counter-clockwise by means
of a 5 mm Allen key.
When FAR reducing valves are installed in a new application, it is essential
that the system is clean and free of debris, it is recommended that a strainer
be located upstream of the reducing valve, even though a small strainer is
already built into the cartridge. The FAR pressure reducing valve can be
installed at any position and it is normally located between two shut-off points,
one upstream and one downstream. These are useful for easier periodic
maintenance. The flow direction is indicated by the arrow on the reducing
valve body. For those installations in which the boiler is located just after
the pressure reducing valve, use of an expansion vessel is recommended
in order to absorb any increase in pressure. Rising temperature causes fluid
to expand, thus resulting in increased pressure in the section between the
pressure reducing valve and the boiler.
EXPANSION
VESSEL
BOILER
PRESSURE
REDUCING VALVE
USES
SECTION SUBJECT TO PRESSURE INCREASE
3. Remove the brass cap
using a 25mm wrench.
All pressure reducing valves are calibrated to 500kPa. The pressure level
reached by the system can be seen by means of a pressure gauge, which
can be fitted to the pressure reducing valve, by removing the knurled plug,
or mounted directly onto the pipe downstream of the pressure reducing
valve. In order to change the pressure value it is essential to close the
shut-off valve downstream of the reducing valve, so as to read the static
pressure of reducer. Then, once the plug (1) has been removed by means
of a screwdriver, set the pressure value desired, reading it on the pressure
gauge, by using the 5mm Allen Key on the regulating screw (2) to either
increase the pressure by turning clockwise, or decreasing the desire value
of pressure by turning counter-clockwise.
+ clockwise:
- counter-clockwise:
+
downstream pressure level increases
downstream pressure level decreases
MAINTENANCE
The presence of a small strainer (built in to the cartridge 7) inside the reducing valve requires regular maintenance, mainly in case of systems
working with water rich in debris or with no strainer immediately after the meter. Therefore the FAR pressure reducing valve has an easy system
for the extraction of the cartridge (7). To carry out this operation you have to:
1. Remove the protection cap
by means of a screwdriver
in order to access the
regulating screw of the
spring.
2. In order to take tension
off the spring, turn the nut
counter-clockwise by means
of a 5 mm Allen key.
3. Remove the brass cap
using a 25mm wrench.
1 - Plug
ABS
1
1 - Plug
ABS
2
2 - Regulating screw
C38500 brass
2
2 - Regulating screw
C38500 brass
3 - Brass bonnet
C38570 brass
3 - Brass bonnet
C38570 brass
4 - Spring push button
INOX 18/8 AISI302
4 - Spring push button
INOX 18/8 AISI302
4
5 - Spring
EN 10270-1
5
6 - Ring
AISI304 steel
6
7 - 1/2" - 3/4" cartridge
7
8 - Pressure reducing valve body
C35330 brass
9- Knurled plug for pressure gauge
C38500 brass
3
4
4. To extract the cartridge, place 2
screwdrivers under the metal disc - as
shown in the picture - and press down.
5 - Spring
EN 10270-1
5
6 - Ring
AISI304 steel
6
7 - 1/2" - 3/4" cartridge
7
9
8
5. Once the cartridge is removed, clean
the strainer and the seat.
PRESSURE REDUCING VALVE
1
3
4. To extract the cartridge, place 2
screwdrivers under the metal disc - as
shown in the picture - and press down.
AS 1357.2
Lic.WMKA20344
DOWNSTREAM PRESSURE CALIBRATION
MAINTENANCE
1. Remove the protection cap
by means of a screwdriver
in order to access the
regulating screw of the
spring.
Art.2864-2866-2868-2870 1/2”- 3/4”
Art.2865-2867-2869-2871 1/2”- 3/4”
C35330 brass
9- Knurled plug for pressure gauge
C38500 brass
9
8
TECHNICAL FEATURES
Max. working inlet pressure: 1600kPa
Downstream calibration pressure: adjustable from100 to 600 kPa
Pre-calibration: 500kPa
Max. fluid temperature: 80°C
Usable fluids: water and air
8 - Pressure reducing valve body
5. Once the cartridge is removed, clean
the strainer and the seat.
TECHNICAL FEATURES
Max. working inlet pressure: 1600kPa
Downstream calibration pressure: adjustable from100 to 600 kPa
Pre-calibration: 500kPa
Max. fluid temperature: 80°C
Usable fluids: water and air
GALVIN ENGINEERING Pty Ltd - Phone: 1300 514 074 - www.galvinengineering.com.au
GALVIN ENGINEERING Pty Ltd - Phone: 1300 514 074 - www.galvinengineering.com.au
VF148 EDIZIONE N°2: 16/11/2010
VF148 EDIZIONE N°2: 16/11/2010
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