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 6150-00-412-4038
NSN 6130-01-534-6185
NSN 6320-00-433-2773
NSN 7035-01-537-0408
NSN 5999-01-320-8207
NSN 5930-01-523-6277
NSN 5930-01-360-7065
NSN 5835-01-095-8851
NSN 6105-00-514-0884
NSN 5975-01-587-3468
NSN 6145-00-762-1099
NSN 5960-01-624-1170