TM 5-4220-227-14
5-9. Pressure Relief Valve.
This task covers:
Replace
INITIAL SETUP:
Tools
Materials/Parts (Cont)
General Mechanic's Tool Kit
Bags, Plastic (Item 3, Appendix E)
(NSN 5180-00-177-7033)
Tape, Teflon (Item 23, Appendix E)
Materials/Parts
Equipment Condition
Pressure Relief Valve
Chamber shut down (para. 2-15).
Bands, Rubber (Item 4, Appendix E)
Replace. (figure 5-5)
(1) Remove pressure relief valve (1) from ball valve (2).
WARNING
Leave 1 1/2 threads exposed on fitting when applying teflon tape. This will ensure that
no teflon tape will hang down inside the air system. Teflon tape should be wrapped in
such a manner that when the fitting is tightened the tape will not loosen. Failure to wrap
teflon tape correctly may result in contamination or blockage of the air system and
subsequent possible injury or death to the diver.
(2) Apply teflon tape to threads on pressure relief valve (1) and install valve on ball valve (2).
5-14
