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 5925-01-577-2271
NSN 5915-01-010-6181
NSN 6105-01-058-3583
NSN 5935-00-148-8381
NSN 5999-01-381-2457
NSN 2925-00-355-5130
NSN 5835-01-632-6627
NSN 6240-00-890-5814
NSN 6685-01-373-7979
NSN 5950-00-234-2532
NSN 6220-01-484-9583
NSN 6150-00-300-6452