sleeve plug valve

sleeve plug valve

sleeve plug valve is a kind of plug valve, which utilizes a ported, moving sleeve located between the piston and cylinder wall and rotated or moved up and down by a gear or camshaft driven actuators. A sleeved plug valve having flow-throttling lug members at the ports in the valve body, such lug members constituting raised, island like projections from the walls of the valve chamber located immediately adjacent the side edge of the ports in the direction of throttling or closing plug movement, such lug members extending circumferentially of their respective ports only along such side edge and having a length which is only a minor portion of the total port circumference, and such lug members having a minimum width at their widest point which is a function of the maximum port dimension of the valve.

Principle of opening and closing of the valve

process of opening and closing of the valve.When opening the valve,first of all,turn the hand wheel to make the plug lifted and separated with the sealed surface,the turn the handled by 90 degree to connect the channel of plug th the channel of valve body.So that the valve is opened.When closing the valve,first of all turn the handle by 90 degree to mark the channel of plug vertical to the channel of valve body,and then the hand wheel to descend the plug.So that the valve is closed.

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