Rubber Seated Double Offset Butterfly Valve

ALIS Valves offers Rubber Seated Double Offset Butterfly Valves for industrial applications requiring reliable flow isolation, efficient operation and dependable sealing performance. These valves feature a double-offset disc and shaft arrangement that reduces friction between the disc and seat during opening and closing. The offset design helps minimize seat wear compared with conventional concentric butterfly valves while supporting smooth operation over repeated cycles. A resilient rubber seat, selected according to the application, provides sealing against the disc and helps achieve effective shut-off under specified operating conditions. The valve body can be configured with suitable materials and connection arrangements to meet pipeline requirements, while manual, pneumatic or electric actuation options support different operating and automation needs.

Rubber Seated Double Offset Butterfly Valves are used in water treatment plants, wastewater systems, irrigation networks, HVAC installations, industrial water distribution and other pipeline applications. Depending on the selected rubber compound, body materials and pressure rating, they can be specified for compatible liquids and other suitable process media within their rated operating limits. Important selection factors include valve size, pressure class, operating temperature, process media, rubber seat material, body and disc materials, connection type, required leakage performance and operating torque. Seat materials such as EPDM or NBR may be suitable for different services, but compatibility must be verified against the actual fluid and operating conditions. For automated installations, actuator sizing and control system compatibility should also be considered. Selecting the appropriate valve configuration helps support dependable shut-off, reduced operating friction and reliable long-term performance in the intended application.