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 6130-01-400-6123
NSN 5925-01-263-0687
NSN 6610-01-475-1921
NSN 6685-01-246-4139
NSN 6145-00-512-6675
NSN 6240-01-090-9146
NSN 6320-01-019-1028
NSN 5935-01-274-0288
NSN 5930-01-340-2773
NSN 6620-00-837-9484
NSN 5999-01-432-5780
NSN 6320-01-086-2602