Maintenance
The pressre reducing valve must be checked and serviced to comply with applicable regulations.
Even when installed, commissioned and serviced properly, the pressure reducing valve's
internal components are subject to normal wear and tear, which may result in leaks and other
malfunctions. Check or good working order and service and clean the cartridge at least every 12
months.
The cartridge, containing the diaphragm, strainer, seat, valve plug and compensating piston,
is pre-assembled as a self-contained unit with a cover and can be removed for inspection and
maintenance. When checking, cleaning or replacing the cartridge:
1) Shut off the inlet and outlet isolation valves.
2) The downstream pressure setting can be left at the set value.
3) Remove the upper cover, using a spanner. This cover is integral with the cartridge.
4) Check and clean the filter.
5) If needed, the self-contained cartridge can be completely replaced. When the cartridge is
crewed back into the body, the pressure indicating window will return the value to the original
position.
6) Reopen the shut off valves and the pressure will return to the original set value.
For the brass DIRTMAG
®
,
the ferrous impurities
are captured by a strong
neodymium rare-
earth
magnetic field created by a powerful
removable magnet around the body below
the flow line.
10
580
S eri
es
3
5
