TM 5-4220-227-144-24. Depressurization Valve and Gage (Medical Lock).This task covers:ReplaceINITIALSETUP:ToolsMaterials/Parts (Cont)General Mechanic's Tool KitBands, Rubber (Item 4, Appendix E)(NSN 5180-00-177-7033)Bags, Plastic (Item 3, Appendix E)Tape, Teflon (Item 21, Appendix E)Materials/PartsEquipment ConditionValvePressure GageChamber shut down (para. 2-15).Replace. (figure 4-6)WARNINGTo prevent the spread of disease, serious injury and/or death, oxygen breathing systems must bemaintained hygienically clean and free from dust, dirt, and all hydrocarbon contamination. Refer tooxygen system prework procedures para. 4-10 to avoid violating this warning.(1)Remove silencer (1) from fitting (2).(2)Remove fitting (2) from valve (3).(3)Remove valve (3) from tee fitting (4).(4)Remove gage (5) from tee fitting (4).(5)Remove tee fitting (4) from chamber.WARNINGLeave 1 1/2 threads exposed on fitting when applying teflon tape. This will ensure that no teflon tape will hang downinside the air system. Teflon tape should be wrapped in such a manner that when the fitting is tightened the tape will notloosen. Failure to wrap teflon tape correctly may result in contamination or blockage of the air system and subsequentpossible injury or death to the diver.(6)Apply teflon tape to all pipe threads.(7)Install tee fitting (4) on chamber.4-22
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business