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 5910-01-104-5927
NSN 6145-01-502-3525
NSN 5835-00-025-9951
NSN 6145-01-472-2228
NSN 5960-01-648-1872
NSN 5910-01-564-4903
NSN 5996-01-378-7636
NSN 6610-00-005-1847
NSN 5985-01-250-1565
NSN 5915-01-165-7409
NSN 2925-01-463-8856
NSN 4140-00-021-2807