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 5985-01-231-6917
NSN 6130-00-922-1418
NSN 6220-00-030-6728
NSN 5915-00-584-3512
NSN 6240-01-644-9907
NSN 5975-00-339-3313
NSN 6685-00-959-4089
NSN 5990-01-288-7393
NSN 5910-00-820-0818
NSN 6610-01-538-4660
NSN 6135-00-274-4035
NSN 6110-01-633-2508