2012年4月23日星期一

Works in the high platform ball valve is closed


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Ball valve in the pipe is mainly used to cut distribution and change the media flow direction. Two ball, three ball valves is a new type of valve in recent years has been widely used to close the process
High platform ball valve and flange gate valve is the valve of the same type, the difference in its closure is a sphere, a sphere around the body centerline rotation to achieve open and closed a valve.
Ball valve in the pipe is mainly used to cut distribution and change the media flow direction.
Two ball, three ball valve is a new type of valve in recent years has been widely used to close the process
A closed, clockwise rotation of the handwheel, stem began to decline and make a sphere out of the seat begins to rotate.
2 Continue turning the handwheel, the valve stem by the spiral groove embedded in its role of guide pins, so that the stem and the sphere at the same time rotated 90 °.
3 near the closed sphere in the case of contact with the seat rotated 90 °.
4 handwheel is turned the final laps, the stem at the bottom of the angular plane mechanical wedge to the oppression of the sphere, so that it closely pressed on the seat, to achieve complete seal.

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