Where Is Flanged Ball Valve Commonly Used?

Flanged Ball Valve have their own unique characteristics and are more common in certain applications.

Hard-seal ball valves feature an eccentric metal seal structure, with metal-to-metal sealing, interchangeable metal-to-metal sealing rings, and stainless steel and graphite composite plate sealing rings. In addition to electric actuation, hard-seal butterfly valves can be operated manually, by worm gear, or pneumatically. These valves are typically installed horizontally.

The butterfly disc of a hard-seal ball valve is installed diametrically within the pipe. Within the cylindrical passage of the hard-seal ball valve body, the disc-shaped disc rotates around its axis, with rotation angles ranging from 0° to 90°. At 90°, the valve is fully open. The characteristics of the new high-life stainless steel butterfly valve and the problems encountered during butterfly valve operation. Currently, hard-seal ball valves and hard-seal butterfly valves, used to provide on/off and flow control in pipeline systems, are widely used in many fields, including petroleum, chemical, metallurgy, and hydropower. Conventional butterfly valves typically utilize a sealing structure, using materials such as rubber and polytetrafluoroethylene. Due to structural limitations, these valves are not suitable for applications requiring high-temperature, high-pressure, corrosion-resistant, or wear-resistant performance.

A relatively advanced butterfly valve is the triple-eccentric metal-seal butterfly valve, in which the valve body and seat are integral components, and the seat sealing surface is welded with a heat- and corrosion-resistant alloy.