flue gas damper valve

Flue gas damper SD-E Series


• Nominal diameter rating from DN200 to DN3600.
• Max. Working temperature: 450℃. (Depending on the material).
• Material: Carbon Steel, ND Steel(09CrCuSb), Stainless Steel.
• End Connections: Flanged.
• Leakage rate: 0.
• Inspection hatches :soot cleaning.
• Provide customized service.

It is designed not to be fully sealing, but with sealing air connection could be zero leakage when applied sealing air. It is designed with inspection hatches for manual soot cleaning when required.

Working principle

The flue gas damper with double combined discs is operated by manual clutch or single pneumatic actuator (could be FC or FO position when power failure).To close the damper, each damper disc touch the sealing rings (two couple of malposed half rings) to get the plane sealing effect; the damper shaft and half rings are unique designed for surface sealing; both side of shaft end are sealed with H.T. resistant soft material stuffing. The air sealing connection for sealing air (sealing air pressure is slight higher than the flue gas pressure) is option according to customer’s requirement.

Please contact us for details.