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 6685-01-329-6384
NSN 6610-00-070-0076
NSN 6320-01-228-2380
NSN 6145-00-923-8127
NSN 5895-00-068-7134
NSN 6220-00-796-4977
NSN 4140-00-478-0056
NSN 5945-00-218-0012
NSN 5950-01-351-6681
NSN 5985-00-797-3985
NSN 6130-01-323-6025
NSN 5920-01-510-3933