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 5920-01-348-5770
NSN 5950-00-935-2428
NSN 5950-01-616-3429
NSN 5985-00-905-7167
NSN 6220-01-415-5698
NSN 5905-00-298-1951
NSN 6220-01-528-6827
NSN 5999-00-619-8124
NSN 6105-01-362-0423
NSN 5950-00-170-6790
NSN 6145-01-479-3354
NSN 6645-01-549-8910