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 6650-00-834-9062
NSN 5990-01-411-5930
NSN 5960-00-420-0418
NSN 6645-01-089-6459
NSN 6685-01-146-0915
NSN 6130-01-644-0180
NSN 4140-01-228-8356
NSN 6110-01-312-7479
NSN 5895-00-816-5561
NSN 5905-01-468-3367
NSN 6135-01-321-3148
NSN 6685-01-544-8440