iv | Baker Hughes
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10. Bellows Seal Assembly .......................................................................................................... 11
10.1 Bellows Valve Disassembly ............................................................................................... 16
10.1.1 Threaded Trim .......................................................................................................... 16
10.1.2 Quick-Change Trim ................................................................................................... 16
10.2 Repair................................................................................................................................17
10.2.1 Plug / Stem Bellows / Bonnet Extension S/A ............................................................ 17
10.3 Plug And Seat Ring Seating Surfaces .............................................................................. 18
10.4 Bonnet Reassembly .......................................................................................................... 18
10.5 Valve Body Reassembly ................................................................................................... 18
10.6 Actuator To Body S/A And Plug Stem Adjustment ............................................................. 18
10. Actuation ..................................................................................................................................20
Appendix for high pressure valves 21000 API 6A Series ......................................................... 30
