176 Detroit St # 1 Cary IL 60013 USA
DAMPER BUTTERFLY VALVES
The butterfly or wafer damper can be a stack damper where sealing or tight shut-off is not all-important. This type is used as an isolating damper for flue-gas scrubbers. The butterfly damper is lightweight, simple, quickly actuated and often comparatively low in cost. In process work, oval shapes adapt to that shape of duct. Occasionally, a double-disc butterfly appears resembling a circular two-bladed louver damper.
The drive for a butterfly damper is also simple, needing only 90° of motion. The torque requirement can vary widely over damper life, if corrosion and thermal effects are severe. Hand levers, Gear boxes, Pneumatic Actuators or Electric actuators are used to actuate butterfly dampers.
Description
Material
Body
IS 2062 Gr. B
Disc
Shaft
AISI 410
Bearing
Standard
Gland Pata
Teflon Bush
Teflon
Graphite Ring
Graphite
Hex Bolt
SS 202 / SS 304
Seat Ring
Bottom Shaft
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