2-41. GATE VALVE (VENT VESSELS) MAINTENANCE.
This task consists of:
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
Pipe Wrench (Appendix B, Section III, Item 3)
Tape, Anti-seize (Appendix C, Section II, Item 30)
Rags, wiping (Appendix C, Section II, Item 23)
ROWPU shutdown (TM 10-4610-240-10).
Power shutdown (power source manual).
ROWPU piping drained (TM 10-4610-240-10).
Remove cap (1).
Open gate valve (14) and allow water to drain.
Loosen two nuts (3 and 19).
Remove two nuts (7), screws (17), and clamp halves (6 and 16).
Remove two nuts (12), screws (9), and clamp halves (10 and 11).
Remove gate valve (14) and attached parts from control panel (2).
Remove gasket (8).
Position gate valve (14) and attached parts in vice.
Remove adapter (13) from gate valve (14)
Remove ring filler (15) and insulation tape (18) from nipple (5).
Remove bushing (4), adapter (20) and nipple (5) from gate valve (14).