Top Entry Trunnion Mounted Cryogenic Ball Valves – C52
Valves Series
Top Entry Trunnion Mounted Cryogenic Ball Valves – C52
Valves
Series
11
2.10.
Use the stem (4) to dismantle the centering plate (27A).
2.11.
Put the stem on the ball and use it to release the plate. Pull the stem towards the seat to
energize its springs and at the same time remove the plate. The seat side is marked with the
letter "S" on the body flange surface. For easier plate removal, use either a bolt, screwed into
one of the two threaded holes or a hook tool (bolt usage is shown on the picture).
2.12.
Remove and discard the ball radial bearing from the plate.
2.13.
Slightly tilt the ball away from the seat and remove it from the valve.
2.14.
Using the cartridge grip provided with the repair kit, release and remove the seat cartridge.
2.15.
Discard the cartridge. Remove and discard the lower ball radial bearing and the lower thrust
washer, primary and secondary bonnet seals and the housing seal from the body.
