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 5990-01-334-8634
NSN 6110-01-270-0814
NSN 5905-01-475-9694
NSN 6240-01-381-5541
NSN 5925-01-005-9481
NSN 5835-00-764-4388
NSN 6105-00-802-6603
NSN 5990-01-294-6198
NSN 6685-01-534-3372
NSN 5910-01-582-6549
NSN 5999-00-457-0574
NSN 6610-01-311-8230