2-51. BALL VALVES (DRAIN) MAINTENANCE.
This task consists of.
General Mechanics Tool Kit (Appendix B. Section III, Item 4)
Tape, Anti-seize (Appendix C, Section II, Item 30)
Lockwasher (2) - MS35338- 138
ROWPU shutdown (TM 10-61-24-10).
Power shutdown (power source manual)
ROWPU piping drained(TM 10461-24-10).
There are seven train ball valves. All are removed the same. One is shown, the others are similar.
a Remove tube (3) from adapter (4).
Tag drain ball valves before removal Valves must be installed in same location from which
b. Remove nut (1) and handle (2) from drain ball valve (5)
c. Support drain ball valve (5) and remove two screws (7) and lockwashers (8)
d. Lower drain ball valve (5) and tilt to remove from hole in bracket (6)
e. Remove adapter (4) from drain ball valve (5).
There are seven drain ball valves All are installed the same. One is shown, the others are
Install drain ball valve in position tagged during removal.
a. Apply antiseize tape to male pipe threads. Be sure tape is wrapped in same direction as threads.
b. Install adapter (4 ) on drain ball valve (5).