ALFA LAVAL UNIQUE SSV STANDARD VALVE INSTRUCTION MANUAL—REV 3/19
5 Maintenance
Study the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly.
NC = Normally closed.
NO = Normally open.
A/A = Air/air activated.
5.4 Valve assembly
Reverse order of 5.2 Dismantling the valve.
Lubricate O-ring (21) and lip seal (25) with Klüber Paraliq GTE 703.
Remember to tighten spindle and plug (use two 17 mm spanners).
- Change-over plug tighten torque = 2222 llbbff -- fftt ((3300 N
Nm
m))
- Shut-off plug tighten torque =1155 llbbff -- fftt ((2200 N
Nm
m))
If there are vibrations in the pipeline Alfa Laval recommend to use loctite nr. 243.
The clamps thread must be lubricated before tightening - max. torque for the clamps is 8-9 lbf - ft (10-12 Nm).
!
Pay special attention to the warnings.
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