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 6130-00-999-4448
NSN 6645-01-218-5234
NSN 5835-01-104-1299
NSN 4140-01-273-3962
NSN 5996-01-111-4145
NSN 6145-01-140-1538
NSN 5835-01-608-3319
NSN 6610-00-401-2601
NSN 5950-00-216-7548
NSN 6685-01-432-2579
NSN 5895-01-401-5388
NSN 5996-00-338-9760