2016年7月19日星期二

Eccentric half ball valves application advantages in the alumina industry.

Eccentric half ball valve is made to achieve the opening by rotating the ball around the body centerline, a valve closed. Eccentric semi-ball valve wear (friction ball solve traditional problems), switch light, corrosion (in the fully open fully closed, the ball and seat sealing face isolation, does not produce any friction), easy maintenance, low torque design (using special stem, switch easy and convenient), low cost, suitable to make large diameter, stable performance, reliable sealing, simple structure, easy maintenance, with the spherical sealing surface often in the closed state, not easily be eroded media, eccentric half ball in sewage treatment industries, pulp, aluminum, urban heating, power plants, hydraulic slag or gas pipeline control is widely used, here I will take a hard seal eccentric half ball used in the aluminum industry to it has the advantages described.
Since hard seal eccentric half ball valve as alumina dedicated, had its performance can cut aluminum materials occupy a considerable part of the market, but also exposed the use of trunnion mounted ball valve structure and in the way hard seal force poor sealing performance shortcomings, how to make the sealing performance has improved leaving half-ball half ball alumina industry to improve the utilization of technological valve manufacturer Division title.
1) Semi-ball valve because of its emphasis on the internal structure of the reasons and to ensure that the role of the one-way hard seal, seat support alone is not enough for the hemisphere, the use of high-tech new materials to reduce the weight of the dome, using supersonic spray carbonation Tungsten technology available on lighter hemisphere blank fuss, and reducing the weight of the hemisphere but also to ensure its wear resistance, erosion performance.
2) Increase the strength of the stem seal is one way to solve the problem, half ball hemisphere structure generally used for the U and V are two, is to rely on the axis of rotation to drive close, open; so that the shaft (stem) The flexural strength of the valve seal to do with good or bad play a key must be used easily deformable material processed through the flexural strength guarantee does not bend, or half ball will produce internal stress during use and impact of the valve seal.
3) The hard sealing resilient seat half ball valve can improve sealing performance, the semi-ball valve seat seal structure design will be made into line taken hug seat hole machining or processing methods can dovetail with elastic seat Back to recoil to improve half ball valve sealing performance.
Should you want to know more about ball valve from Reliable China valve manufacturer, please visit www.reliavalve.com or email us via sales@reliavalve.com.

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