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 6145-00-932-5698
NSN 6685-00-037-9635
NSN 6110-00-566-2113
NSN 5915-01-481-3025
NSN 5905-00-408-9329
NSN 5905-00-575-5118
NSN 6145-00-003-4184
NSN 5975-01-178-4509
NSN 6620-00-464-6105
NSN 6240-01-254-6019
NSN 6145-01-043-0756
NSN 6650-01-138-5891