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 5998-01-158-1316
NSN 5998-01-414-7684
NSN 6650-00-067-3572
NSN 6135-00-676-5807
NSN 5945-01-451-2018
NSN 6150-01-367-1387
NSN 6645-01-650-0023
NSN 5925-01-579-3744
NSN 5975-00-446-7875
NSN 5965-01-607-1966
NSN 5910-01-097-0735
NSN 6620-01-356-9966