Top Entry Trunnion Mounted Cryogenic Ball Valves – C52
Valves Series
Top Entry Trunnion Mounted Cryogenic Ball Valves – C52
Valves
Series
12
3.
Assembly
The following instructions are for in-line assembly of valves of all sizes.
3.1.
Place the new lower bearing into the body; use a pin punch tool and a hammer to seat it.
3.2.
Place the thrust washer with its coated side facing up.
3.3.
Place the new housing seal on the new seat cartridge from the repair kit.
3.4.
Insert the cartridge into the valve body and hand tighten it.
3.5.
Using the cartridge grip and a torque wrench, tighten the cartridge according to the torques in table 1.
3.6.
Place new stem bearing into the centering plate.
Table 1
Valve Size
Torque Nm
1/2”
(DN15)
50
3/4”
(DN20)
60
1”
(DN25)
75
11/2”
(DN40)
100
2”
(DN50)
150
21/2” (DN65)
225
3” (DN80)
300
4”
(DN100)
400
6”
(DN150)
650
