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 2925-01-397-2495
NSN 6145-01-128-0928
NSN 5925-01-428-1674
NSN 6610-01-643-2315
NSN 5960-00-960-6805
NSN 5920-00-918-4426
NSN 6320-01-512-2031
NSN 6685-01-653-5477
NSN 5996-01-483-1858
NSN 6220-01-190-3743
NSN 6145-01-441-1201
NSN 5835-01-461-8184