GB
GB
4
5
1. Installation
It is necessary during installation to follow
codes of good practice, to comply with local
requirements and to follow the installation
instructions. 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.
☞
For 2" valve size only, venturi nozzle and
'O'- ring supplied should be installed on
outlet side (Fig. 2).
2. Assembly
1. Thoroughly flush pipework.
2. Install pressure reducing valve.
●
Fit venturi nozzle
(2" valve only - See Fig. 2)
●
Check that flow is in direction of arrow
●
Install in horizontal pipework with filter
bowl downwards
●
Install without tension or bending
stresses.
For soldered union connectors, remove
valve whilst making soldered connections
to avoid high temperatures damaging
important internal working components.
3. Set the outlet pressure (See Section 3).
3. Setting outlet pressure
1. Close valve 1 .
2. Release pressure at side of outlet (e. g.
through water tap).
3. Loosen slotted screw 3
●
but do not remove.
4. Slacken pressure spring
●
Turn adjuster knob 4 anti-clockwise (-).
5. Close valve 2 .
6. Slowly open valve 1 .
7. Adjust outlet pressure
●
Turn adjustment knob 4 clockwise (+)
until the pressure gauge (see accessory
M07) indicates the required outlet pressure.
8. Retighten slotted screw 3 .
9. Slowly open valve 2 .
10. Pressure reducing valve is now ready for use
4. Inspection and maintenance
Planned maintenance is recommended and
DIN 1988, Part 8 specifies the following
operations:
4.1 Inspection
The following should be carried out once a
year by the user or by a specialist:
1. Close valve 2 .
2. Check outlet pressure with a manometer
when no flow is occurring.
Pressure should not rise. If pressure is
not stable and slowly rises, then the valve
insert should be checked and if
necessary be replaced as described
under "Maintenance".
6. Slowly open valve 2 .
4.2 Maintenance
The following operations should be carried
out by a specialist with time intervals
according to operating conditions (DIN 1988
specifies 1 to 3 years):
1. Close valve 1 .
2. Release pressure at side of outlet (e. g.
through water tap).
3. Loosen slotted screw 3
●
but do not remove.
4. Slacken adjustment spring by turning
knob 4 anti-clockwise (-).
5. Close valve 2 .
6. Unscrew spring bonnet
➩
use double ring wrench ZR06K
(See "Accessories").
7. Remove slip ring 5 .
8. Unscrew filter bowl.
9. Unscrew collar nut 6 , remove diaphragm
plate 7 , moulded membrane 8 and
diaphragm disc 9 and unscrew control rod
extension 10 .
10. Unscrew bonnet ring 11 .
11. Pull out valve insert 12 .
Check that sealing washer 13 , nozzle
rim 14 and fluted ring 15 are in good
condition and if necessary replace the
complete valve insert.
Clean filter insert 16 .
12. Assemble in reverse order.
☞
Press membrane in with finger then
position slip ring 5 .
13. Set outlet pressure by turning the
adjuster knob (See section 3).
4.3 Cleaning
If required, the filter bowl and filter insert can
be cleaned by the user or service personnel
at intervals required by site conditions:
Cleaning materials containing solvents
must not be used for any synthetic
material components
1. Close valve 1 .
2. Release pressure at side of outlet (e. g.
through water tap).
3. Close valve 2 .
4. Unscrew filter bowl.
5. Remove filter insert 16 , clean and replace
in bowl.
6. Lightly lubricate 'O'-ring 17 with silicon
grease and place on filter bowl.
7. Screw filter bowl back on.
8. Slowly open valves 1 and 2 .
5. Scope of application
Medium:
Water and other
non-aggressive liquids,
compressed air*,
nitrogen*
Inlet pressure:
Maximum 25 bar
Outlet pressure:
0.5 to 2.0 bar
Operating
temperature:
Maximum 70 °C with
brass filter bowl
Maximum 40 °C with
clear filter bowl
Connection sizes:
1
/
2
" - 2"
In areas with ultra violet rays and
solvent vapors use filter bowl of
brass SM06T.
6. Safety guidelines
1. Use appliance:
●
In good condition
●
According to regulations and codes
of practice
●
With due regard to safety and risk of
danger.
2. Follow installation instructions.
3. Immediately rectify any malfunctions
which may influence safety.
4. D06FN pressure reducing valves are
exclusively for use in applications
detailed in these installation instructions.
Any other use will not comply with
requirements.
5. All assembly operations should be
carried out by competent personnel.
7. Replacement parts and
accessories
(See pages 14,15)
* As part of an installation being approved according to PED
requirements, this product must also be certified.