Alfa Laval Unique SSV User Manual

ALFA LAVAL UNIQUE SSV Y-BODY 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.
A/A = Air /air activated.
Service tool: See Spare Parts.
5.4 Valve assembly
Reverse order of .
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 = 2
2
2
2
l
l
b
b
f
f
-
-
f
f
t
t
(
(
3
3
0
0
N
N
m
m
)
)
- Shut-off plug tighten torque =1
1
5
5
l
l
b
b
f
f
-
-
f
f
t
t
(
(
2
2
0
0
N
N
m
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.
5.5 Actuator bushing replacement
1. Unscrew and remove top and bottom bushings with O-rings.
2. Lubricate O-rings with Molykote Longterm 2 plus before fitting.
3. Fit bushin gs and O-rings. Tighten brushing with a torque = 7 lbf-ft (10Nm).
Be careful not to overtighten.
8
6
7
21
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Alfa Laval Unique SSV Specifications

General

Brand	Alfa Laval
Model	Unique SSV
Category	Control Unit
Language	English