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 6620-01-601-4314
NSN 6105-01-190-9286
NSN 5920-01-627-3189
NSN 6650-00-944-8925
NSN 6685-01-520-4185
NSN 5930-01-417-8724
NSN 5855-01-286-9928
NSN 6220-00-131-2095
NSN 6650-00-897-7083
NSN 5965-00-827-9680
NSN 6150-01-196-0179
NSN 5990-01-219-9018