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 5975-01-036-3507
NSN 6650-00-355-8920
NSN 5835-01-426-0069
NSN 6610-01-578-1976
NSN 6130-01-467-9465
NSN 6110-00-123-7953
NSN 6620-01-438-0415
NSN 5905-00-142-3831
NSN 5950-01-038-4501
NSN 5990-01-303-9920
NSN 5998-01-435-4379
NSN 5945-01-366-6018