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 6610-01-433-2219
NSN 5920-01-022-6821
NSN 6620-01-557-0583
NSN 6110-01-489-5482
NSN 5855-00-560-0110
NSN 6650-01-624-0818
NSN 5945-00-120-0074
NSN 6240-01-174-8118
NSN 6145-00-099-8986
NSN 6645-01-545-6853
NSN 5950-00-725-2233
NSN 5950-01-324-0613