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Figure 25: Common Near-Boiler Piping MistakesTable 6: Steam Boiler Riser & Header Pipe Sizes
Steam Steam Return Condensate Equalizer
Boiler Header Riser Pipe Header Return Pipe Pipe
Model Size (in) Quantity Size (in) Size (in) Quantity Size (in) Quantity Size (in)
32-380 3 1 3 1 1/2 1 1 1/2 1 2
32-475 3 1 3 1 1/2 1 1 1/2 1 2
32-570 4 2 3 1 1/2 1 1 1/2 1 2
32-665 4 2 3 2 1 2 1 2 1/2
32-760 4 2 3 2 1 2 1 2 1/2
32-855 4 2 3 2 1 2 1 2 1/2
32-950 5 2 3 2 1 2 1 2 1/2
32-1045 5 3 3 2 1 2 1 2 1/2
32-1140 5 3 3 2 1/2 1 2 1 2 1/2
32-1235 5 3 3 2 1/2 1 2 1 2 1/2
32-1330 5 3 3 2 1/2 1 2 1 2 1/2
32-1425 5 3 3 2 1/2 1 2 1 2 1/2
32-1520 6 3 3 2 1/2 1 2 1 2 1/2
32-1615 6 4 3 2 1/2 1 2 1 2 1/2
32-1710 6 4 3 2 1/2 1 2 1 2 1/2
32-1805 6 4 3 2 1/2 1 2 1/2 1 3
32-1900 6 4 3 2 1/2 1 2 1/2 1 3
32-1995 6 4 3 3 1 2 1/2 1 3
32-2090 6 5 3 3 1 2 1/2 1 3
32-2185 8 5 3 3 1 2 1/2 1 3
32-2280 8 5 3 3 1 2 1/2 1 3
32-2375 8 5 3 3 1 2 1/2 1 3
32-2470 8 5 3 3 1 2 1/2 1 3
32-2565 8 5 3 3 1 3 1 4
32-2660 8 6 3 3 1 3 1 4
32-2755 8 6 3 3 1 3 1 4
32-2850 8 6 3 4 1 3 1 4
Note: 1. The pipe sizes listed above are nominal trade sizes for Schedule 40 pipe.
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