The product of this project adopts the international advanced standard API6D to design and manufacture, and adopts the patented technology of the enterprise "A flat gate valve that can be quickly disassembled and repaired online". With the help of the energy provided by the pressure source, the valve seats on both sides can be quickly pushed away, which is convenient to remove and install the gate plate. A antifouling is applied on the structure of flat gate valve "patent technology, open gate flow guide hole on the top, contrarian valve, the valve closure gesture, the valve stem in the tensile state, can effectively overcome the positive operation of the valve caused by stem limit subjected to compression bending deformation, ensure the service life of the valve components. Seat sealing adopt hard and soft multiple sealing seat and the tape function of greasing, special seat structure design, can effectively to guide sealing grease into central seating, by the middle of the valve seat sealing surface uniform circular groove seal alicyclic to be full of, let the inner and outer ring valve sealing belt, the seat seal performance is more reliable, are based on innovative design, conform to the trend for the future development of the valve. The structural features, performance parameters and functional features of the products are fully in line with the international advanced standard API6D specification. The material standards are in accordance with ASME and ASTM specifications, and the inspection tests are in accordance with API6D. The minimum wall thickness of valve bearing parts conforms to the requirements of ASME BPVC-ⅷ and ASME B16.34. The design of all bearing parts is strictly calculated according to API6D and ASME B16.34 standards. The product design adopts three-dimensional modeling, finite element stress analysis of the valve body, gate plate, valve cover and other important parts to ensure that the valve can maintain the integrity and operability of the pressure boundary under the load of pressure in the medium, temperature change, pipeline load and valve operating torque. The product adopts a number of patented technologies and proprietary technologies owned by the enterprise, as a special valve for oil and gas pipelines, which plays an effective role in the construction of national key projects and supply chain security. The overall technical level of the product is in the leading level of similar products in China.
The product has passed the new product appraisal organized by Zhejiang Economic and Information Department.
Representative product：NPS30-CL600 on line repair flat gate valve
