The basic knowledge of butterfly valve Butterfly valve is still very cost-effective in many applications, its cost is lower than other valves, unique design and lighter weight, which means less support is required. The disc is located in the center of the pipe, and through the disc support point is the rod of the actuator connected to the outside of the valve. Rotating the actuator causes the discs in the butterfly valve to flow in parallel and vertically. Unlike the ball valve, the disc is always active in the flow, and the butterfly valve always causes a pressure drop in the flow regardless of the valve position. Butterfly valves come from a series of valves called angular stroke valves. In operation, when the disc rotates a quarter of a turn, the valve can be fully opened and closed.

"Butterfly disk" is a metal disk mounted on a pole. When the valve is closed, turn the disc to completely block the channel. When the valve is fully open, the disc rotates a quarter of a turn, so that fluid can pass through without restriction. The valve can also be opened gradually to produce throttling. The butterfly valve consists of a disk mounted on a shaft with bearings for easy rotation. With very efficient energy recovery, only the disc blocks the valve flow path. The flow rate is relatively high and the pressure drop across the valve is relatively low. Butterfly valves are used to restrict throttling and do not need to be closed tightly. When fully opened, the butterfly disc will generate very little turbulence and flow resistance. Recommended use: complete opening/closing or throttling service. Frequent closing operation min. Flow control application benefits requiring small pressure drop: low cost and maintenance of large capacity. Good flow control pressure drop

application:

Economical chemical services, large production lines for water treatment and fire protection systems. The general size is 2 inches to 48 inches, some manufacturers can provide up to 96 inches in size. Due to the valve design, it has a smaller face-to-face size and lower weight than most valve types. Butterfly valves are an economical choice for large-diameter pipeline sizes. Butterfly valves comply with ASME connection port size and pressure rating. No matter how the manufacturer produces, the valve can be easily modified. The ASME pressure ratings that most manufacturers comply with include 150, 300, and 600#, and the maximum pressure is 1500 psi.