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Specifications with Insulation Option |
SF-11 |
SF-20 |
SF-25 |
Operating Current (Amps) |
115V/1Ph/60Hz |
115V/1Ph/60Hz |
115V/1Ph/60Hz |
Boiler Horsepower |
10.7 BHP |
19.7 BHP |
24.5 BHP |
Fuel |
Oil, LP or NG |
Oil |
LP or NG |
Steam Output |
370 LBS/HR |
680 LBS/HR |
845 LBS/HR |
Input, BTU/Hr |
427,000 BTU/HR |
791,000 BTU/HR |
1,010,000 BTU/HR |
Maximum Steam Working Pressure |
15 PSI |
15 PSI |
15 PSI |
Operating Steam Working Pressure |
5-10 PSI |
5-10 PSI |
5-10 PSI |
Maximum Temperature |
250 º F |
250 º F |
250 º F |
Heat Transfer Surface Area, Square Feet |
65 |
118 |
118 |
Firing Rate (#2 Fuel Oil) |
3.05 GPH |
5.65 GPH |
N/A |
Firing Rate (Natural Gas, CFH) |
427 CFH |
N/A |
404 CFH |
Firing Rate (LP Gas, CFH) |
171 CFH |
N/A |
1,010 CFH |
Machine Dimensions, Leg Mounted |
60" L x 40" W x 51" H |
73" L x 58" W x 63" H |
73" L x 58" W x 63" H |
Machine Weight, Dry (Approximate) |
900 LBS |
1200 LBS |
1200 LBS |
Boiler Volume (Approximate) |
55 GAL |
135 GAL |
135 GAL |
Optional Fuel Tank Capacity |
36 GAL |
65 GAL |
N/A |
Efficiency (Approximate) |
0.84 |
0.83 |
0.82 |
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Specifications Without Insulation Option |
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Boiler Horsepower |
10.3 BHP |
19.2 BHP |
23.85 BHP |
Steam Output |
355 LBS/HR |
660 LBS/HR |
821 LBS/HR |
Efficiency (Approximate) |
81% |
80% |
79% |
Approximate Insulation Cost Payback Period,
Based on 1000 Hrs/Yr Operation |
2.2 YEARS |
2.3 YEARS |
2.3 YEARS |
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Options (Consult Factory) |
Steam-Flo, ASME Coded, Leg Mounted, GFCI |
Insulation Option. Includes: 1" Fiberglass Insulation and Stainless Steel Protective Cover |
Trailer, 2-Wheel, Non-Highway. Includes: 15" Tires, Tongue with Pin Type Hitch. Includes Fuel Tank. |
Trailer, 2-Wheel, Over-the-Road. Includes: 15" Tires, Tongue with 2" Ball Hitch, Tail Lights and Wiring Harness. Includes Fuel Tank. |
Skid Mount. Includes Optional Fuel Tank |
Hot Water Boiler Option |
2" x 25' Steam Hose with 2" MPT ends |
2" x 50' Steam Hose with 2" MPT ends |
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The Sioux Steam-Flo ® is a three-pass, dry-back, Scotch boiler registered with the National Board of Boiler and Pressure Vessel Inspectors, is built to Section IV of the ASME Code and meets ASME CSD-1 Code. |