5 Maintenance
Maintain the valve regularly.
Study the instructions carefully and pay special attention to the warnings!
CIP = Cleaning In Place.
Always keep spare rubber seals, lip seals and guide rings in stock.
The valve is designed so that single internal leakages do not result in the products becoming mixed.
Internal leakage in the valve is externally visible.
Check the valve for smooth operation after service.
Valve rubber seals Valve lip seal
Valve guide rings
(for DN125 and
DN150 only)
Actuator rubber
seals
Bonnet guide ring
Preventive
maintenance
Replace after 12
month
Replace when
replacing the valve
rubber seals
Replace when
required
Replace after 5
years
Replace when
replacing the
actuator rubber
seals (*)
Maintenance after
leakage (leakage
normally starts
slowly)
Replace by the
end of the day
Replace when
replacing the valve
rubber seals
Replace when
required
Replace when
possible
Planned
maintenance
-
Regular
inspection
for leakage
and smootth
operation
-
Keep a record of
the valve
-
Use the statistics
for planning of
inspections
Replace after
leakage
Replace when
replacing the valve
rubber seals
Replace when
required
-
Regular
inspection
for leakage
and smooth
operation
-
Keep a record of
the actuator
-
Use the statistics
for planning of
inspections
Replace after air
leakage
Replace when
replacing the
actuator rubber
seals (*)
Lubrication
(USDAH1 approved
oil/grease)
Before fitting:
Silicone oil or
silicone grease
Before fitting:
Silicone oil or
silicone grease
None
Before fitting:
Silicone oil or
silicone grease
None
(*) = IMPORTANT
Check that the guide ring is fitted if replacing the bonnet (except on DN125 and DN150).
Recommend spare parts
Service kits see chapter 7 Parts list and service kits .
Order service kits from the service kits list see chapter 7 Parts list and service kits .
Ordering spare parts
Contact the sales department.
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