Principle of action:
Eccentric half ball valve is a new type of valve products in recent years, eccentric half ball valve has some unique advantages of its own structure, it has no friction switch, sealing is not easy to wear, opening and closing torque is small. Eccentric half - ball valves rely on rotating valve chains to keep the valve open or closed. The ball valve switch is light, suitable for large caliber, stable performance, reliable sealing, simple structure, convenient maintenance, sealing surface and sphere are often in the closed state, not easy to be media erosion, in various industries have been widely used. Eccentric ball valve is suitable for sewage treatment, pulp, aluminum oxide, urban heating heating to the occasion of strict standards; Suitable for power plant, hydraulic slag removal or gas conveying pipeline control.
Structural features:
Eccentric ball valve open and close without friction, this function completely solves the traditional ball valve because of the mutual friction between the sealing surface and sealing problems.
Designed as a jacket structure, the valve installed in the pipeline can be directly online inspection and maintenance, can effectively reduce the device parking, reduce the cost.
Eccentric ball valve in full open or full closed, the ball and seat sealing surface and media isolation, the media through, will not cause the erosion of ball valve sealing surface.
Low torque design, special design of the valve stem, only with a small hand handle ball valve can easily open and close.
Eccentric half - ball valve sealing surface structure has self - cleaning function. When the ball is tilted away from the seat, the fluid in the pipeline passes evenly along the sealing surface of the ball in 360¡ã, which not only eliminates the local scour of high-speed fluid on the seat seat, but also washes away the accumulation on the sealing surface, achieving the purpose of self-cleaning.
Technical parameters and execution standard of ball valve:
Design [gb12237-89]
Structural length [gb12221-89]
Flange connection [GB/ t17241.6-1998, GB/T9115]
Applicable temperature: -29¡æ ~ 540¡æ;
Working pressure: pn1.6-6.4mpa;
Applicable media: seawater, acid and alkali, slurry, steam, gas, oil, etc.
Material body: QT450, WCB, ZG20CrMo, ZG1Cr18Ni9Ti
