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 6320-01-642-2615
NSN 6645-01-014-2849
NSN 5960-01-353-3302
NSN 6320-01-629-1277
NSN 6685-00-966-0089
NSN 6105-01-555-4426
NSN 6650-01-565-1471
NSN 6610-01-259-1718
NSN 5975-00-832-6887
NSN 6320-01-054-3046
NSN 4140-00-804-4163
NSN 6610-01-105-9520