Mechanical Contracting & Plumbing January-December 1912 . s I II i Is To obtain extra heat fromhot water heating systems,at no extra cost, simply install a B Heat Intensifier which, by raising the boiling point of the water from 2120 to240°, increases the number of heat units in each square foot of radiation, effecting a directsaving in pipes and fittings, and insuring an absolutely perfect circulation. The B Heat Intensifier is strictly a mechanical device and operates with pre-determined accuracy. Write for a copy of our complete descriptive booklet, which shows, byfacts and figures, how the

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Mechanical Contracting & Plumbing January-December 1912 . s I II i Is To obtain extra heat fromhot water heating systems,at no extra cost, simply install a B Heat Intensifier which, by raising the boiling point of the water from 2120 to240°, increases the number of heat units in each square foot of radiation, effecting a directsaving in pipes and fittings, and insuring an absolutely perfect circulation. The B Heat Intensifier is strictly a mechanical device and operates with pre-determined accuracy. Write for a copy of our complete descriptive booklet, which shows, byfacts and figures, how the National Pressure System must effect an economy. And dont forget to obtain information on the National Automatic Air Valves for allpurposes, particularly on the Improved Thermostatic Valve. National Steam Specialty Company 24-26 S. Clinton Street, Chicago L. N. Vanstone, 8 Wellington St. East, Toronto. Moncrieff & Endress, LimitedScott Building, Winnipeg. Surpless, Dunn & Co., 74 Murray St., New York. See Sweets Index, Pages 1139, 1140,

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplumbin, bookyear1912