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 6685-00-261-4860
NSN 6610-01-389-3082
NSN 6620-01-499-1492
NSN 6610-01-440-4314
NSN 6610-00-365-4454
NSN 5996-01-556-4277
NSN 5895-00-855-1083
NSN 5855-00-361-0167
NSN 5960-01-543-0235
NSN 6135-01-632-2217
NSN 5895-00-141-9127
NSN 5895-01-200-7150