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2.2.3 Determining and Marking the Second Nozzle Location - Diametrical (cont.)
3. Using a roll of polyester film (or equivalent), cut a strip of film with the following width and length:
IMPORTANT: Ensure that the sides of the film are cut parallel to each other.
•
equal to the average outside diameter calculated in Step 2 on the previous page.
Width:
•
equal to 4 times the average outside diameter of the pipe.
Length:
4. Wrap the strip of film around the pipe with one edge running along the vertical scribe line at the first nozzle
location. Make sure the strip overlaps squarely around the pipe and mark the overlap position of the strip, as
shown in Figure 11 below. This equals the circumference of the pipe.
Model T17 Installation Guide
Average
O.D.
Figure 10: Polyester Film Dimensions
Figure 11: Polyester Film Overlap Mark
4 x O.D.
Overlap Mark
Side View
Chapter 2. Installing the Pipe Nozzles
9
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