Breathing valve with by-pass hose, niosh/msha approval for intrinsically safe apparatus
No other part numbers with same form, fit, and function found.
NSN 6685-01-090-3979
NSN 5965-01-289-6436
NSN 5965-01-233-8607
NSN 5895-01-067-9751
NSN 6645-01-514-0236
NSN 4140-00-007-5726
NSN 6645-01-633-1852
NSN 5835-01-456-3922
NSN 6110-01-203-0572
NSN 6110-00-987-6971
NSN 6150-00-552-2073
NSN 6220-01-660-5902