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 6610-00-256-8006
NSN 2925-00-878-2196
NSN 2925-00-215-4954
NSN 5930-01-360-2162
NSN 5998-01-423-5707
NSN 5945-01-124-4222
NSN 6135-00-276-7625
NSN 5935-01-019-1802
NSN 5960-00-983-5986
NSN 6645-01-358-4907
NSN 5985-01-627-3608
NSN 5975-01-514-6783