Applications

Maximum Movement Flue Duct Expansion Joints

The Holz Rubber Series 945 W-Design Flue Duct Expansion Joint is built for maximum movement. It’s ideal for applications in a scrubber, precipitator, baghouse and stack, hot air or flue gas ducts. The 945 W-Designed flue duct expansion joint offers superior axial and lateral movement capabilities without pre-compression or pre-extension. The compound curve molded corners ensures that the reinforcing material is not pre-stressed at the neutral installed face dimension.

Series 945 Maximum Movement Flue Duct Expansion Joints

Typical Installation Arrangement

Maximum Movement Capabilities (in inches)

Movement shown at face-to-face

Lateral Offset figures are based on the assumption that all lateral movement occurs prior to compression movements. In practice, movements may occur simultaneously thus the allowable lateral offset may increase or decrease.

Extension may be increased or decreased by pre-compression during installation. However, the amount of pre-compression will correspondingly reduce the compression ratings.

Pressure/Vacuum Ratings

For constant vacuum, a set-back may be required to ensure the joint is not in the media stream.

Product Weight

Add 7 inches to the face-to-face dimension for calculating the square footage. Retaining Bars: 3/8″ X 2″, A-36 Carbon Steel.