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 5998-01-185-5455
NSN 5985-01-030-4195
NSN 5960-01-030-3191
NSN 5996-01-466-7643
NSN 5855-00-962-5792
NSN 5925-01-313-8396
NSN 6135-01-602-8383
NSN 6105-00-664-1292
NSN 5855-01-441-0401
NSN 6610-00-805-5302
NSN 6145-01-432-1198
NSN 5965-01-050-7055