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 6620-01-364-2103
NSN 5985-00-613-0162
NSN 6220-01-006-2618
NSN 5920-01-406-3462
NSN 6620-01-111-9064
NSN 5975-01-310-0209
NSN 5910-01-468-5891
NSN 5998-01-113-9529
NSN 4140-01-642-8009
NSN 6685-01-318-6540
NSN 5895-00-067-4968
NSN 6240-01-567-7144