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 2925-01-326-0908
NSN 6610-01-481-1807
NSN 5996-01-540-3576
NSN 6320-01-359-3921
NSN 5965-01-528-9830
NSN 5925-01-010-2925
NSN 5960-01-449-1310
NSN 5965-01-195-2168
NSN 6320-00-908-6841
NSN 6650-00-232-6390
NSN 6685-01-348-1170
NSN 6105-01-339-7537