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Installing the PDJ Dampening Jacket
If the pipe temperature is over 150°F, you must use the PDJ pipe
dampening jacket with preapplied DMP-3. As the dampening
material dries out over several hours after installation, its
effectiveness increases. The jacket is available in standard pipe
sizes from 4 to 12 in. (100 to 300 mm).
1. Remove any insulation from the installation area, as well as
any loose paint, rust and high spots from the pipe.
2. Remove the backing paper from the inside of the pipe
dampening jacket (shown in Figure 3-33 below).
Figure 3-33: The PDJ Pipe Dampening Jacket
3. Install the jacket on the pipe as shown in Figure 3-34 below.
Tighten the clamping screws so that some fluid drips from the
bottom of the jacket.
Figure 3-34: Installation of a PDJ Jacket
Installing the Dampening Material, Transducers and Fixtures
April 2009
3-33
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