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 6135-00-856-1343
NSN 6685-01-533-1053
NSN 6130-01-591-9810
NSN 5930-01-451-4331
NSN 6320-01-449-1014
NSN 5935-01-455-7383
NSN 5920-01-124-9883
NSN 6240-01-141-2219
NSN 5930-01-409-1912
NSN 5950-00-035-8791
NSN 6320-01-294-7161
NSN 5950-01-355-2777