14
GAS PIPING
Table 5.2: Pipe Capacity
Capacity of pipe of different diameters and lengths in cubic feet per hour (cubic meter per
hour) with pressure drop of 0.3 inches of water (75 Pa) and specific gravity of 0.60. No
allowance for an ordinary number of fittings is required.
Table 5.1: Natural Gas
Pipe
Length in
Feet (Meters)
3/4"
Pipe
1"
Pipe
1-1/4"
Pipe
1-1/2"
Pipe
10 (3.0) 278 (7.9) 520 (14.7) 1050 (29.7) 1600 (45.3)
20 (6.1) 190 (5.4) 350 (9.9) 730 (20.7) 1100 (31.1)
30 (9.1) 152 (4.3) 285 (8.1) 590 (16.7) 890 (25.2)
40 (12.2) 130 (3.7) 245 (6.9) 500 (14.2) 760 (21.5)
50 (15.2) 115 (3.3) 215 (6.1) 440 (12.5) 670 (19.0)
60 (18.3) 105 (3.0) 195 (5.5) 400 (11.3) 610 (17.3)
Boiler
Model
Natural Gas Input LP Gas Input
Cu. Ft/hr Cu. Meter/hr Cu. Ft/hr Cu. Meter/hr
PSCII-03 65 1.8 26 0.7
PSCII-04 90 2.5 36 1.0
PSCII-05 120 3.4 48 1.4
PSCII-06 150 4.2 60 1.7
Specific Gravity 0.50 0.55 0.60 0.65 0.70 0.75
Correction Factor 1.10 1.04 1.00 0.96 0.93 0.90
Specific Gravity 0.80 0.85 0.90 1.00 1.10 1.20
Correction Factor 0.87 0.84 0.82 0.78 0.74 0.71
Specific Gravity 1.30 1.40 1.50 1.60 1.70 1.80
Correction Factor 0.68 0.66 0.63 0.61 0.59 0.58
Maximum Capacity Correction Factors for Specific Gravity
other than 0.60.
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