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 6685-00-162-2052
NSN 5935-00-911-7195
NSN 6645-00-767-6307
NSN 7035-01-057-6325
NSN 6105-00-061-5038
NSN 6240-00-151-7642
NSN 5855-00-610-4052
NSN 5996-01-463-0920
NSN 6650-01-477-2124
NSN 6130-01-607-2997
NSN 6610-01-207-0045
NSN 7035-01-463-9855