NOTE: The cubic feet per hour listed in the table above must be greater than the cubic feet per hour of gas flow required by the furnace. To determine the cubic feet per hour
of gas flow required by the furnace, divide the input rate of the furnace by the heating value (from gas supplier) of the gas.
GAS FLOW RATES
(CUBIC FEET PER HOUR)
TIME FOR
ONE REVOLUTION
(SECONDS)
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
22
Gas Information
CAPACITY OF BLACK IRON GAS PIPE (CU. FT. PER HOUR)