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 6105-01-440-8820
NSN 6685-01-607-6481
NSN 5999-01-624-7142
NSN 6150-01-004-3105
NSN 6145-00-705-6679
NSN 5990-00-133-0102
NSN 6240-01-089-6149
NSN 5915-01-542-9037
NSN 5855-01-278-8922
NSN 5945-01-335-6994
NSN 4140-00-725-4012
NSN 5855-01-244-4978