ALFA LAVAL UNIQUE RV-ST VALVE INSTRUCTION MANUAL—REV 8/21
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.
Drawing 1
Drawing 2
Drawing 3
Drawing 4
2404-0115
A
B
2404-0115
A
B
2404-0117
A
B
2404-0109
*
* = It is important to place the screwdriver underneath the plug.
5.4 Assembly of valve
Reverse order of .
Lubricate O-ring (21) and lip seal (25) with Alfa Laval Lubricant.
Remember to tighten spindle and plug (use two 17 mm spanners).
- Change-over plug tighten torque = 3300 N
Nm
m
- Shut-off plug tighten torque = 2200 N
Nm
m
If there are vibrations in the pipeline, Alfa Laval recommends to use Loctite no. 243.
The clamps’ thread must be lubricated before tightening - max. torque for the clamps is 10-12 Nm.
!
Pay special attention to the warnings.
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