The butterfly valve is a type of flow control device, typically used to regulate a fluid flowing through a section of pipe. The valve is similar in operation to a ball valve. A flat circular plate is positioned in the center of the pipe. The plate has a rod through it connected to an actuator on the outside of the valve. Rotating the actuator turns the plate either parallel or perpendicular to the flow. Unlike a ball valve, the plate is always present within the flow, therefore a pressure drop is always induced in the flow regardless of valve position.

The news.come from www.bossgoo.com

industry valve : http://www.goshardware.com/showroom/tlvalve/

industry valve : http://www.gosbuild.com/showroom/tlvalve

industry valve : http://www.gosfurniture.com/showroom/tlvalve/

industry valve : http://www.trade-suppliers.com/showroom/tlvalve/