Alfa Laval SRC - Assembly of Valve

18
1
3
5
4
2
6
Study the instructions carefully.
The items refer to the drawings and the parts list on the
pages 22-37.
Lubricate the rubber seals and the lip seal before fitting
them.
Lip seal (14) can be replaced by a special stem seal
(sizes 25-101.6 mm/DN40-100).
3. Assembly of valve
1. Assemble the complete valve plug.
2. Fix screw (19h, 20h) by using loctite or
something similar.
Change-over valve:
1. Assemble upper valve body (16) and the
actuator.
2. Fit and tighten upper clamp (15).
Fix!
Change-over valve
Stop valve
Stop valve
Change-over valve
Air (NC, A/A)
Air (NC, A/A)
Stop valve:
1. Supply compressed air to the actuator (Only NC).
2. Fit the actuator.
3. Fit and tighten clamp (15).
4. Release compressed air.
Pay special attention to the warnings!
Change-over valve:
1. Fit seal ring (17) correctly in lower valve body (18).
2. Supply compressed air to the actuator (Only NC).
3. Assemble lower and upper valve bodies
(16, 18).
4. Fit and tighten lower clamp (15).
5. Release compressed air.
Pay special attention to the warnings!
Turn the diagonal
surface of seal
ring (17) upwards!
Fit lip seal (14).
(For sizes DN125-150: Fit guide ring (27) and lip
seal (14)).
Air (NO, A/A)
1. Fit the plastic ring of clip assembly (11) on the
actuator piston rod.
2. Supply compressed air to the actuator (Only NO).
3. Fit valve plug (19, 20).
4. Fit and assemble clip assembly (11). (For sizes
DN125-150: Screw together valve plug (20) and
piston (6). Fix thread by using Loctite or something
similar)).
5. Release compressed air.
Pay special attention to the warnings!
Change-over
valve
Stop
valve
Maintenance
Air (NO, A/A)