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 2925-00-054-3550
NSN 5960-01-023-8037
NSN 6110-01-657-7142
NSN 6145-01-125-3306
NSN 5996-00-240-0010
NSN 4140-00-809-8996
NSN 5925-01-067-8301
NSN 5910-00-566-0648
NSN 5985-00-222-6066
NSN 6150-01-066-2119
NSN 6620-01-160-8517
NSN 5998-01-044-8939