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 5895-01-426-8942
NSN 5985-01-455-7531
NSN 6145-01-093-0383
NSN 5990-01-442-3520
NSN 6320-01-162-5977
NSN 6685-01-122-5744
NSN 6685-01-503-6537
NSN 5895-00-847-8935
NSN 6685-00-803-1754
NSN 5915-01-200-0753
NSN 5915-01-274-0587
NSN 5925-00-515-2438