LOW-PRESSURE SERIES TORCH BURNERS are made up of Lojectors, lever-handled gas cocks, AN Burner nozzles, mounting cages, pilots and blocks in cast iron holders, and assembled as required. They are designed for low pressure gas at normal city pressures. Because they depend mainly on draft for most of the combustion air required, their capacity can only be increased by increasing the draft through the burners. The Multiplier Table for Capacity Table No. 1 on Pages 4 & 5 of the PDF (lower left banner), shows how much gas can be burned at drafts other than 0.1'' W. C. To obtain the increased capacities, the gas orifice must be enlarged or, in some cases, removed altogether. Valves and lead-in pipes may also have to be enlarged.
CAPACITY TABLE
Torch Size
1000 BTU/HR
0.1 DRAFT
Approximate
Based on Gas Pressures* shown below
Flame Length
Minimum
Maximum
Inches
Kind of Gas
Btu/cf
Gas Pressure
6
40
65
12 - 18
Manufactured Gas
450/600 Btu/cf
3" - 12" W.C.
8
70
95
14 - 24
10
100
135
16 - 28
Mixed Gas
650/850 Btu/cf
4" - 12" W.C.
12 (A cage)
140
165
18 - 32
12 (B cage)
160
175
18 - 36
Natural Gas
900/1150 Btu/cf
5" - 12" W.C.
16
200
280
20 - 40
20
300
400
22 - 44
24
450
600
24 - 48
Propane
2500 Btu/cf
11" - 15" W.C.
321
650
800
26 - 52
322
850
1,000
28 - 56
Butane
3200 Btu/cf
11" - 15" W.C.
323
1,000
1,200
30 - 60
481
1,300
1,400
32 - 64
482
1,600
1,700
34 - 68
483
1,900
2,000
36 - 72
484
2,200
2,300
38 - 76
485
2,500
2,600
40 - 80