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 6320-00-295-2854
NSN 5950-00-248-2324
NSN 6685-00-337-5529
NSN 5999-01-027-3841
NSN 5996-00-894-0843
NSN 5945-01-131-0455
NSN 6150-00-471-3212
NSN 6110-01-411-1119
NSN 5945-01-352-0663
NSN 4140-01-371-0327
NSN 5915-00-861-7901
NSN 5895-01-067-3350