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 6685-01-313-4499
NSN 6110-00-980-9292
NSN 5996-01-632-4144
NSN 5945-01-549-3665
NSN 6135-01-222-0703
NSN 5960-01-106-3086
NSN 5960-01-196-9203
NSN 2925-00-871-4089
NSN 2925-00-001-4604
NSN 6320-00-593-0379
NSN 6650-01-406-5322
NSN 5990-01-084-8330