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 5985-01-605-0230
NSN 5990-01-489-0366
NSN 5895-01-616-6283
NSN 5920-01-237-3875
NSN 6110-01-421-2714
NSN 6240-01-568-2495
NSN 5930-00-432-4810
NSN 5925-01-300-0480
NSN 6650-00-509-5248
NSN 5945-00-946-4648
NSN 5945-01-429-0029
NSN 6685-01-350-4330