A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5998-01-067-9359
NSN 5905-01-657-2012
NSN 2925-01-025-0082
NSN 6150-01-582-3319
NSN 6685-01-605-1491
NSN 5895-01-367-2922
NSN 6610-01-381-3181
NSN 6645-00-632-0736
NSN 6650-00-877-0091
NSN 5895-01-558-5341
NSN 5998-01-378-7023
NSN 5835-00-051-9092