Chapter 2. Installing the Pipe Nozzles
8
Model T17 Installation Guide
2.2.2 Selecting and Marking the First Nozzle Location - Diametrical (cont.)
4.
Spray the area around the first nozzle location mark with a marking dye product. Using a metal straight edge,
scribe 6” long vertical and a horizontal lines that intersect at the center punch mark (see
below).
Figure 8: First Nozzle Scribe Lines
2.2.3 Determining and Marking the Second Nozzle Location - Diametrical
To mark the second nozzle location, complete the following steps:
1.
The location for the second nozzle is typically a distance equal to one pipe outside diameter along the pipe
from the first nozzle location and on the opposite side of the pipe (i.e., 180
°
around). Spray this area with a
marking dye product.
Note:
For angles other than 45°, the distance is equal to the pipe OD times the tangent of the installation angle.
2.
Due to the possible variation in OD of the pipe, measure the outside diameter of the pipe at four locations
between the nozzle centers (see
below). Then, calculate the average OD from these measurements.
Figure 9: Multiple OD Measurements
Side View
D1
D2 D3
D4
Side View
