ISO 5208-2015 pdf free.Industrial valves一Pressure testing of metallic valves. ISO 5208 specifies examinations and tests that a valve manufacturer needs to act upon in order to establish the integrity of the pressure boundary of an industrial metallic valve and to verify the degree of valve closure tightness and the structural adequacy of its closure mechanism. This International Standard is intended to be applied in conjunction with the specific requirements of a valve product standard to the extent cited by the product standard as a normative reference. Where requirements of a product standard differ from those given in this International Standard, the requirements of the product standard apply. This International Standard is not applicable to the safety aspects of pressure testing. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 shell test test at a pressure in excess of the cold working pressure (2.9) rating of a valve for the purpose of validating the soundness and strength of the valve pressure containing and retaining structures Note I to entry: These structures include valve-actuating mechanisms that have a direct connection to the valve internals subject to fluid test pressure within the valve proper. 2.2…