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Flange type fixed ball valve structural characteristics

Author: Comefrom: date:2016/1/6 15:47:12 Hits:207 Tags:

Flange type fixed ball valves are used in chemical, petroleum, natural gas, metallurgy, and other industries and containing hydrogen sulfide media, impurities and more serious corrosion of natural gas long pipeline. Flange type fixed ball valve is suitable for a wide range of sizes from small to a few millimeters, large to a few meters, from high vacuum to high pressure can be applied. When the ball is rotated 90 degrees, the inlet and outlet of the ball should be all of the spherical surface, thus cutting off the flow.

The structural characteristics of the flange fixed ball valve:

1, open and close without friction: completely solve the valve due to the friction between the cover and the impact of the problem of mutual friction;

2, jacket type structure: the valve installed on the pipeline can be directly online inspection and maintenance, can effectively reduce the device to stop the car, reduce costs;

3, single seat design: the elimination of the valve in the cavity due to abnormal pressure to boost the use of safety issues;

4, low torque design: the special structure of the design of the stem, just with a small hand wheel valve can easily open and close;

5 wedge-shaped seal structure: valve is a mechanical force provided by the stem, the ball valve seat on the wedge pressure to seal, the valve seal from the changes in pipeline pressure effects, under a variety of conditions sealing performance have a reliable guarantee;

6, the sealing surface of the self-cleaning structure: when the ball tilt away from the valve seat, fluid in the pipeline along a sphere sealing surface into 360 degrees evenly through, not only eliminates the high-speed fluid on the seat of the local scour, wash away the sealing surface accumulation, achieve the purpose of cleaning.

Fixed ball valve before the valve seat after the valve can be sealed, that is, the so-called two-way sealing characteristics, the use of self discharge valve, the chamber can be discharged outside the chamber. The pivot adopts the anti blow out protection structure, and the low friction coefficient of the bearing and the like.


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