8. Pipe Sizing Guidelines
4801-1020
Super-Saver XL
TM
Heater
23
Figure 8A Arbitrary Piping System
5. Follow the row leftward until you reach the columns labeled “Internal Diameter” and “Nominal Pipe
Size”. Read the pipe size for the particular pipe section. Example: For pipe section c-e, the pipe size
is 3/4" (0.824") (19.1 mm). Repeat for each pipe section.
Table 1
Ref #
Description
1
Heaters
2
Tees
3
Gate valve
4
Gas Meter
Minor Loss Equivalents
Fitting
2" (5.08 cm) IPS or Smaller
2" (5.08 cm) IPS to 4" (10.16 cm) IPS
Feet per Fitting
Meters per Fitting
Feet per Fitting
Meters per Fitting
45° Elbow
3
1
5
2
90° Elbow
6
2
10
3
Tee
11
4
20
6
Gate Valve
2
1
3
1
Angle Valve
29
9
60
18
Swing Valve
15
5
30
9
Pipe Sizes Determined for Diagram
Pipe Section
Max. Gas Capacity Value Determined from Table 2
Pipe Size Determined from Table 2
BTUH
kWh
Inches
mm
a-b
280,000
82
1-1/4
31.8
b-c
135,000
40
1
25.4
b-d
72,000
21
3/4
19.1
b-f
72,000
21
3/4
19.1
c-e
72,000
21
3/4
19.1
c-g
72,000
21
3/4
19.1
