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 6105-00-345-9722
NSN 6685-01-029-3773
NSN 6610-01-579-9646
NSN 5945-00-863-6452
NSN 6105-00-250-1780
NSN 5950-01-458-5977
NSN 6610-01-630-5515
NSN 5905-01-322-7983
NSN 5910-00-153-0024
NSN 6240-01-217-0432
NSN 6320-01-514-6141
NSN 6685-00-259-3013