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 5930-01-343-5020
NSN 6135-01-588-2662
NSN 5905-00-254-4721
NSN 6645-00-601-6793
NSN 2925-01-544-4880
NSN 5925-00-001-5977
NSN 5999-01-406-6274
NSN 6685-00-705-6071
NSN 5996-01-367-9431
NSN 6645-00-673-0337
NSN 5920-01-053-0987
NSN 6145-00-213-5176