Gas Pipe Chart (Natural Gas) - Maytag MDE17CS Service Manual

The chart shows the maximum capacity in
terms of cubic feet of gas per hour, for various
sizes of pipe at lengths of from 10 feet to 200
feet. The column on the left is the nominal
iron pipe size shown in inches. Sizes range
from 1/4" to 4". The next column shows the
internal diameter of the pipe in decimal inches.
The numbers across the top of the chart are
lengths of pipe from 10 feet up to 200 feet.
The numbers in the body of the chart are
maximum capacities of cubic feet of gas per
hour.
To determine the cubic feet of gas required
per hour, divide the total BTU input of all the
dryers which will be on the line by the average
BTU heating value per cubic foot of the gas
used.
Nominal Internal
iron diameter
10
pipe inches
size,
inches
1/4 .364 32
3/8 .493 72
1/2 .622 132
3/4 .842 278
1 1.048 520
1 1/4 1.380 1050
1 1/2 1.610 1600
2 2.087 3050
2 1/2 2.169 4860
3 3.068 8500
4 4.026 17,500 12,000 9700 8300 7400 6800 6200 5800 5400 5100 4500 4100 3800 3500

GaS PiPE CHarT (NaTural GaS)

20 30 40
22 18 15
49 40 34
92 73 63
190 152 130
350 285 245
730 590 500
1100 890 760
2100 1650 1450 1270 1150 1050
3300 2700 2300 2000 1850 1700 1600 1500 1400 1250 1130 1050
5900 4700 4100 3600 3250 3000 2800 2600 2500 2200 2000 1850 1700
EXAMPLE:
The dryer has a rating of 30,000 BTU. If the
average BTU rating of natural gas is 1000,
divide 30,000 by 1000 and get 30. If for
example, eight dryers are to be operated on a
gas line, the following figures would be used:
30
X 8 Dryers
240 Total cubic feet of gas per hour
Let's assume 40 feet of pipe is required.
Here's how to use the chart:
1. Look across the top of the chart and find 40
feet of pipe.
2. Look down into the body of the chart to get
to, or just over the maximum needed cubic
feet of gas per hour. In this case it will be
245.
3. Look to the left column and see a 1" pipe is
required.
Length of pipe, feet
50 60 70 80
14 12 11 11
30 27 25 23
56 50 46 43
115 105 96 90
215 195 160 170
440 400 370 350
670 610 560 530
990
2-13
Cubic feet per hour each
90 100 125 150
10 9 8 8
22 21 18 17
40 38 34 31
84 79 72 64
160 150 130 120
320 305 275 250
490 400 410 380
930 870 780 710
175 200
7 6
15 14
28 26
59 55
110 100
225 210
350 320
650 610
980