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 6135-01-426-0671
NSN 6645-01-543-7834
NSN 5996-01-549-9915
NSN 6105-01-217-8831
NSN 5998-00-407-9084
NSN 4140-01-003-6850
NSN 5920-00-411-5237
NSN 6105-01-613-2953
NSN 5855-01-167-2162
NSN 6150-00-104-4572
NSN 6110-01-106-4440
NSN 6610-01-231-9283