Damper Butterfly Valves are suitable for applications where the leakage is not all-important. Damper Butterfly Valve is also the best option for isolating damper for flue-gas scrubbers. FlowBiz Damper Butterfly Valves are lightweight, easy, rapidly actuated, and often relatively low cost. The drive for a butterfly damper is also simple, requiring only 90° of motion. Size Range: 8 inches to 80 inches (200mm to 2000mm) PRESSURE/ TEMPERATURE: WORKING RATING:5 KG/CM2 TEMPERATURE UP TO:1200 °C