National boilers, radiators, and specialties: catalog no26 . Round 1904 Export Oval 2, 2y2», 3, 4 4^x4xl% 6x4^x2% 2Mx4xl When ordering flue brushes, in all cases show on order sizeand style of boiler for which they are intended. 74 NATIONAL HEATING SPECIALTIES SteamTraps EmpirePattern. Sizes, Capacities and Prices Number ., 0 1 2 3 Weight, pounds 301 H 1,500 500 $ 59 1 3,600 1,200 $ 72IK IH 5,700 1,900 $ 1172 Outlet connection, inches Drainage capacity, lineal feet of 1-inch IK12,000 Drainage capacity, square feet of direct radiating surface Price, without auto
National boilers, radiators, and specialties: catalog no26 . Round 1904 Export Oval 2, 2y2», 3, 4 4^x4xl% 6x4^x2% 2Mx4xl When ordering flue brushes, in all cases show on order sizeand style of boiler for which they are intended. 74 NATIONAL HEATING SPECIALTIES SteamTraps EmpirePattern. Sizes, Capacities and Prices Number ., 0 1 2 3 Weight, pounds 301 H 1,500 500 $ 59 1 3,600 1,200 $ 72IK IH 5,700 1,900 $ 1172 Outlet connection, inches Drainage capacity, lineal feet of 1-inch IK12,000 Drainage capacity, square feet of direct radiating surface Price, without automatic air , with automatic air valve. 4,000 $ The above capacities are based on a condensation ^ equal toi%\ pound of water per hour per square foot of radiation, oper-ating under low pressure. These traps, as regularly made, are for low pressure andshould not be used where the pressure exceeds 10 pounds tothe square inch. The copper balls used in these traps are of the finest materialand workmanship and are tested at 150 pounds pressure, andguaranteed not to leak or collapse under 75 pounds pressure. The valve stems operate through guides, thus preventingany possibility of becoming unseated. Rules for Setting and Operating After trap is set in level po
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsteambo, bookyear1920
