Applications

Standard Movement Flue Duct Expansion Joint

The Holz Rubber Series 942 U-Design Flue Duct Expansion Joint is built for standard or normal movement. It’s equipped for applications requiring standard movement, maximum noise, vibration, and sound absorption, allowing superior protection to duct systems, flanges and equipment housing.

Typical Installation Arrangement

Holz Rubber Series 942 Flue Duct Expansion Joint

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