2-44. BALL VALVES (DRAIN) REPLACE.
This task consists of:
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
Tape, Anti-seize (Appendix C, Section II, Item 19)
Lockwashers (TM 10-4610-241-24P)
Power shut down (Power Source Manual).
ROWPU Piping drained (TM 10-4610-241-10).
General Safety Instructions
ROWPU piping and equipment can contain extremely high pressure during and
after operation. If this pressure is not relieved before performing maintenance,
serious injury or death may result. Be sure to open all drains and vents before
On Models WPES-10, WPES-20, and WPES-30, there are seven drain
ball valves. On Models H-9518-1, H-9518-2, and H-9518-3, there are
six drain ball valves. All are installed the same. One is shown, the
others are similar.
Loosen nut (1) and disconnect tube (2) from adapter (8).
Remove nut (3), lockwasher (4) (high pressure valve only) and handle (5) form
drain ball valve (9).
Vessel and pulse dampener lines require high pressure valves (Models
H-9518-1, H-9518-2, and H-9518-3 do not have a pulse dampener
line). If more than one valve is to be replaced, be sure to tag valves,
identifying them as high or low pressure valves to ensure correct
Support drain ball valve (9) and remove two screws (6) and lo&washers (7).
Lower drain ball valve (9) and tilt to remove from cutout in bracket (10).
Remove adapter (8) from drain ball valve (9).
2-180 Change 1