. American engineer and railroad journal . FIG. 2. ISH—i. FIG. 4. Washing Out With Hot Water.—The National hot-waterlocomotive boiler washing and filling system was installed andplaced in operation at the Bellefontaine roundhouse in December,1909. It is equipped with two Dean duplex pumps 12 x 8>2 x 12in.; the capacity of the filling pump is 500 gallons per minute;the washout pump will wash three boilers at a time with a pres-sure of 90 lbs. The filling storage tank has a capacity of 12,000gallons, and the washout tank a capacity of 85,000 gallons. It takes I hour 56 minutes to wash and fil
. American engineer and railroad journal . FIG. 2. ISH—i. FIG. 4. Washing Out With Hot Water.—The National hot-waterlocomotive boiler washing and filling system was installed andplaced in operation at the Bellefontaine roundhouse in December,1909. It is equipped with two Dean duplex pumps 12 x 8>2 x 12in.; the capacity of the filling pump is 500 gallons per minute;the washout pump will wash three boilers at a time with a pres-sure of 90 lbs. The filling storage tank has a capacity of 12,000gallons, and the washout tank a capacity of 85,000 gallons. It takes I hour 56 minutes to wash and fill a boiler, includingthe cooling of the boiler and letting out of the water. You canwash a boiler quicker than this, but I doubt if you can do itright. The water in the washout tank is ordinarily about 185 , being regulated by a valve on the cold water line. Thisvalve is actuated by a thermostat inserted in the tee in the suctionline, the thermostat assuring a positive temperature of the wash-out water. The filling water is ordinarily about 1
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