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 5996-01-502-1417
NSN 5950-01-440-3242
NSN 5996-00-337-5158
NSN 6650-01-504-4745
NSN 5960-00-232-2512
NSN 6150-01-059-7301
NSN 5835-01-259-0859
NSN 6610-01-166-4860
NSN 5999-01-440-5382
NSN 6610-01-441-8364
NSN 5915-01-426-8862
NSN 6150-01-136-1530