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 6685-01-339-7696
NSN 6685-01-353-7782
NSN 5950-00-479-9707
NSN 4140-00-340-1592
NSN 5945-00-296-1729
NSN 5985-00-550-7754
NSN 6620-01-391-9829
NSN 5975-01-166-1002
NSN 5925-01-029-3483
NSN 6685-01-094-6455
NSN 5935-00-204-9909
NSN 5965-00-801-1131