This standard establis es the nominal pressures and diameters of the manual control accessories used in the pipelines of the naval systems of ships and floating media. This standard is not applicable to accessories of refrigeration, hydraulic, pneumatic and automatic regulation and control systems.
NC 80-72-1987 history
1987NC 80-72-1987 Fishing Industry. Shipbuilding Manual Control Accesories of Pipeline Naval Systems. Nominal Diameters and Pressures