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 6610-01-146-0331
NSN 6685-00-522-9833
NSN 5990-01-463-5400
NSN 5950-01-580-6543
NSN 2925-01-611-2200
NSN 6685-01-398-2756
NSN 6650-01-515-0391
NSN 6130-01-494-8140
NSN 6150-00-985-3385
NSN 5835-01-264-8782
NSN 5945-01-356-5736
NSN 5975-01-051-7434