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 5930-00-118-4808
NSN 7035-01-502-9967
NSN 6650-01-197-4585
NSN 5895-01-267-6870
NSN 6610-00-454-0284
NSN 2925-00-889-8004
NSN 6685-01-435-5628
NSN 6220-01-525-5956
NSN 5985-01-075-9134
NSN 5990-01-443-2931
NSN 5975-00-372-6265
NSN 5999-01-620-3340