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 5990-01-417-4402
NSN 5975-01-518-6374
NSN 6650-01-450-7930
NSN 6110-00-356-5388
NSN 5915-01-506-8750
NSN 5945-00-211-0151
NSN 5999-00-967-0424
NSN 5905-00-922-8806
NSN 6220-01-300-5413
NSN 5985-01-598-7517
NSN 5998-00-726-5875
NSN 6610-01-476-7412