Valve calibration and control fluid flow, often in the manufacturing and chemical processes. new technology marketing, marketing of the brand owner of said ball valve, lined ball valve is a professional perfluoroalkoxy or polytetrafluoroethylene coating.According to Sperry, they generally use highly corrosive or acidic substances,Ball Valves is often found in chemical and pharmaceutical plants, and pulp and paper mills.
Lining ball valve must be certified for certain uses. Certified by the American Petroleum Institute (API), American Society of Mechanical Engineers, American Society for Testing and Materials International Organization for Standardization, such as the organization granted. The valve is tested using stringent criteria of an independent body.
ASME and ASME B31.4 Certification is granted to a specific channel and lined ball valves for the transportation of liquid hydrocarbons. Become certified, lined ball valves must be checked at an authorized inspection agency hydrocarbon transport, Safety valves to ensure that there is no possibility of leakage. Various pressure tests. ASME discretion, may require additional testing, GLOBE VALVElining ball valve manufacturing facilities. Maintain the ASME certification, once it was awarded the annual payment of fees. If the lining of the pressure valve through independent testing, production facilities are approved, pay the appropriate fees and lining ball valve is to obtain ASME B31.4 certification stamp.

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