Pressurization Valve (Inner Lock Door)

Figure 4-6. Depressurization Valve and Gage, Replace

Figure 4-7. Pressurization Valve (Inner Lock Door), Replace

TM-5-4220-227-14 MK12 Surface Supported Diving System (SSDS) (NSN 4220-01-097-5674) Manual
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TM 5-4220-227-14 4-25. Pressurization Valve (Inner Lock Door) This task covers: Replace INITIAL SETUP Tools Materials/Parts (Cont) General Mechanic's Tool Kit Bands, Rubber (Item 4, Appendix E) (NSN 5180-00-177-7033) Bags, Plastic (item 3, Appendix E) Tape, Teflon (Item 21, Appendix E) Materials/Parts Equipment Condition Depressurization Valve Chamber shut down (para. 2-15). Replace. (figure 4-7) (1) Remove pressurization valve (1) from inner lock door (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 of valve (1) and install on inner lock door (2). 4-24

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