2-38. BALL VALVES (VENT VALVES) REPLACE.
This task consists of:
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
Pipewrench (Appendix B, Section 111, Item 3)
Tape, Anti-seize (Appendix C, Section 11, Item 30)
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 performing maintenance.
On Models H-9518-1, H-9518-2, and H-9518-3, there are only two drain valves. Items
8, 11, 14, 18, 21 and 24 are not present.
Working at front of control panel (26), remove nut (1) and handle (2).
Remove six screws (3) and lo&washers (4).
Working at rear of control panel (26), loosen hose clamp (5) and disconnect flexible tubing (6). If
required, remove clamp from tubing.
Unscrew nuts on tubes (7, 8 and 9) and disconnect tubes.
Pulse dampener line (center valve) requires a high pressure valve. If more than one
valve is removed be sure to tag valves to prevent installation of low pressure valve in
high pressure line.
Remove three valves (10, 11 and 12) and attached hardware.
Remove four adapters (13, 14, 15 and 16).
Marking position of elbows on valves will facilitate installation. Be sure to transcribe
markings to replacement valve prior to discarding valves or turning them in to Supply.
2-164 Change 1