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 6240-01-268-6591
NSN 6135-00-351-8606
NSN 6240-00-383-2573
NSN 5999-00-902-2879
NSN 5950-01-445-6004
NSN 5910-00-401-7698
NSN 7035-01-524-7018
NSN 6685-00-286-8481
NSN 6130-01-150-6606
NSN 5905-01-579-8092
NSN 5895-01-262-5012
NSN 6240-00-765-4220