Metal Seated Double Offset Butterfly Valve

ALIS Valves offers Metal Seated Double Offset Butterfly Valves for industrial applications requiring durable flow isolation and reliable performance under demanding operating conditions. These valves feature a double-offset disc and shaft arrangement that positions the shaft away from the disc centre and sealing axis, helping reduce friction between the disc and seat during opening and closing. The metal-to-metal seating design uses metallic sealing surfaces to support operation in applications where elevated temperatures, mechanical wear or demanding process conditions may limit the suitability of conventional soft seats. Depending on the valve configuration, the body, disc and seat materials can be selected to match the process media, pressure rating and temperature requirements. These valves can be supplied with compatible manual, pneumatic or electric actuators to meet different operating and automation needs.

Metal Seated Double Offset Butterfly Valves are used in power generation plants, oil and gas facilities, refineries, petrochemical industries, steel manufacturing and other industrial pipeline systems. Depending on the selected materials, pressure rating and sealing arrangement, they can be specified for compatible liquids, gases, steam and other process media within their rated operating limits. Important selection factors include valve size, connection type, working pressure, operating temperature, process media, body and disc materials, metal seat construction, allowable leakage rate and operating torque. Metal-seated designs may have different shut-off performance from resilient-seated valves, so the required leakage class should be confirmed during specification. For automated installations, actuator sizing and compatibility with the control system should also be evaluated. Selecting the appropriate valve configuration helps support dependable isolation, reduced sealing-surface wear and consistent performance under the intended operating conditions.