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 6645-01-421-4007
NSN 2925-01-468-7073
NSN 5960-01-593-4760
NSN 5950-01-067-7948
NSN 5990-01-582-3671
NSN 5835-01-030-8914
NSN 6320-01-132-2746
NSN 5999-00-044-4537
NSN 5945-01-576-5936
NSN 6150-00-929-8331
NSN 5855-01-406-7237
NSN 5945-01-081-1694