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 5985-00-652-1631
NSN 5945-00-081-3868
NSN 6620-01-259-2411
NSN 6645-01-118-8526
NSN 6110-01-219-0135
NSN 6685-00-440-6517
NSN 5920-01-077-5325
NSN 6130-01-061-6591
NSN 5935-01-478-1477
NSN 7035-00-916-9380
NSN 6645-01-165-3785
NSN 5895-00-838-2649