Trunnion ball valve has manual, electric, pneumatic, electro-hydraulic and pneumatic hydraulic and other driving methods, is specially developed for natural gas, petrochemical, oilfield, chemical, low temperature and water treatment industry and other fields of pipeline.In performance in line with the API 6D standard of the American Petroleum Institute, has the following characteristics:
1, the seat DBB function design, the use of double seal structure, with reliable sealing.
2, with fire prevention structure, in case of fire, burning soft seal seat, by metal to metal seal can still maintain a minimum leakage, prevent the spread of fire.
3, stem blowout structure.Design in line with the provisions of API 6D standard.
4, with emergency rescue function, when the seal seat damage, through the grease valve injected sealing grease, can play a certain emergency sealing effect.
5, with anti abnormal pressure structure.When the valve body chamber pressure abnormally increased, the valve chamber pressure automatically from the downstream floating seal seat leak off.
6, with anti-static structure, when the ball core due to friction accumulation of static electricity, through the spring installed on the stem and small steel ball, the static electricity into the pipeline into the earth.
7, with high bearing strength, withstand pipeline pressure and stress, block external leakage, less maintenance and so on.
8, The metal seat seal has excellent wear resistance, corrosion resistance and high temperature resistance.
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