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 5950-01-403-2852
NSN 5855-01-395-0676
NSN 5999-00-519-4161
NSN 5965-00-234-0219
NSN 5915-01-207-1416
NSN 6150-00-596-4974
NSN 6610-01-011-4972
NSN 7035-01-383-6549
NSN 5996-00-024-0827
NSN 5998-00-194-6334
NSN 5990-01-008-2515
NSN 6685-01-091-8928