Damper for heating system duct
max. 2 400 Pa, 0.11 m3/s FlowPro Europe

FlowPro's range of butterfly dampers is available for installation either horizontally or vertically into or on walls, floors or bolting to flanges of connecting equipment or ducts. However, mostly this damper is used for fan or duct isolation.

Construction materials of butterfly dampers can be either steel or stainless steel. A protective finish can be added as per customer's request. The shafts are usually made of stainless steel that rotate in external roller bearings. Please note that smaller butterfly dampers have plain bush bearings.

Butterfly dampers are mostly used for fan isolation. Opening and closing of the damper is established by means of quarter turn actuators. FlowPro dampers are fitted with electrical, electro-hydraulic or pneumatic actuators supplied by leading actuator manufacturers. In addition, dampers can be operated by hand using handwheel or handlever with locking gear.

FlowPro's zero leakage butterfly damper sets complete with seal air are used in hot (400-500'C continuously) gas systems where absolute shut off of a duct is required. This occurs for example at power co-generation plants where hot exhaust gas from a gas turbine is recycled in a production process.