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 5990-01-065-0492
NSN 5965-01-399-4530
NSN 6650-01-013-9334
NSN 5905-01-350-3624
NSN 5999-01-579-9565
NSN 6240-01-546-3885
NSN 6320-01-459-6992
NSN 6150-00-287-6879
NSN 5975-01-062-0960
NSN 6135-01-263-4073
NSN 5975-01-391-7803
NSN 5999-01-250-1242