Breathing valve with by-pass hose, meets niosh approval for intrinsically safe apparatus
NSN 5930-01-271-0764
NSN 5935-00-133-8713
NSN 7035-01-532-0495
NSN 6620-01-157-0759
NSN 4140-01-197-7658
NSN 6685-01-291-7522
NSN 5835-01-550-5094
NSN 5910-00-221-1040
NSN 5945-00-639-9848
NSN 5975-01-152-9353
NSN 6320-01-155-8295
NSN 6110-01-466-8067