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 5996-01-438-5839
NSN 6135-01-142-2417
NSN 5945-00-401-6696
NSN 5985-00-852-0457
NSN 6110-01-415-3542
NSN 6220-01-545-7153
NSN 5950-01-350-4462
NSN 6220-01-007-0678
NSN 6610-01-116-2527
NSN 5960-01-247-4560
NSN 5985-01-608-0933
NSN 6685-01-101-7495