Mechanical Contracting & Plumbing January-December 1912 . 4* FOR, STEAM AND HOT WATER HEATING The Spring—the heart ofthe B Heat Intensifier—isguaranteed eighteen years The Phosphor Bronze from which the Spring is made is subjected to three severetests before being used. These tests comprise the Corrosion Test, the Temperature Testand the Elongative Test, and cover a period of eighteen months. The conditionsof the eighteen months test are more severe than eighteen years actual service,hence our remarkable guarantee. Other parts of the ~B Heat Intensifier are made correspondingly strong andrelia
Mechanical Contracting & Plumbing January-December 1912 . 4* FOR, STEAM AND HOT WATER HEATING The Spring—the heart ofthe B Heat Intensifier—isguaranteed eighteen years The Phosphor Bronze from which the Spring is made is subjected to three severetests before being used. These tests comprise the Corrosion Test, the Temperature Testand the Elongative Test, and cover a period of eighteen months. The conditionsof the eighteen months test are more severe than eighteen years actual service,hence our remarkable guarantee. Other parts of the ~B Heat Intensifier are made correspondingly strong andreliable. Writefor complete information, and for details of the National Improved Ther-mostatic 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
