In industrial piping systems, the performance of fully welded ball valvesis closely related to their seat design. The Dib - 1 design, with its unique advantages, has become the preferred option for seat design, specifically manifested in the following aspects.
The core advantage of the Dib-1 design lies in the double piston effect. Its upstream and downstream double piston structure enables the valve seat to closely adhere to the ball under medium pressure, enhancing the sealing effect and automatically compensating for the decline in sealing caused by wear. It performs particularly well in high-pressure and corrosive medium working conditions. Its bi-directional sealing feature ensures reliable sealing regardless of the forward or reverse flow of the medium, greatly expanding the application scenarios of ball valves. In addition, when the valve is opened and closed, the relative movement between the valve seat and the ball creates a self-cleaning effect. Combined with wear-resistant, corrosion-resistant materials and surface treatment processes, it effectively resists the erosion of impurities and reduces maintenance costs.
Compared with the DBB design, the double piston effect of Dib-1 provides stronger sealing force and smaller operating torque, and can meet the requirements of frequent opening and closing. Compared with traditional combined valve seats, the integrated structure of Dib-1 is simple, reducing leakage points, making manufacturing and installation easier, and it can better cope with pressure and temperature changes, operating more stably in high-temperature and high-pressure environments.
In terms of material selection, high-performance engineering plastics such as polytetrafluoroethylene and its modified materials, or specially treated metal materials ensure the wear resistance, corrosion resistance, and elasticity of the valve seat. During the manufacturing process, numerical control processing precisely controls dimensional accuracy, and advanced welding processes such as narrow-gap automatic submerged arc welding ensure welding quality. Combined with strict quality inspections such as non-destructive testing and sealing performance testing, the performance of the Dib-1 valve seat is ensured to be reliable.The choice of the Dib-1 design for the fully welded ball valve seat is the result of the combined effects of its high performance, high reliability, and process adaptability. In the future industrial development, its application prospects will be even broader.
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