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Water Treatment Apparatus Anti-Corrosion Engineering Co., Inc. 117 West 54th Street New York, N. Y. Apparatus for Removing and Preventing Rust in Hot and Cold Water Systems Free Dissolved Oxygen contained in ail natural waters is usually the cause of in ternal corrosion of water supply systems in power plants and buildings. This leads to destruction of apparatus, leaks, dirty water and choked circulation. Salts in the water acelerate corrosion, but without oxygen these salts are inactive. The re moval of the DISSOLVED OXYGEN removes the cause of rust. resulting from the agitation of the water at the boiling temperature sets free all dissolved gases. This apparatus acts both as a deactivator and heater and little or no additional reheating of the water is re quired to obtain the desired temperature for any service. This apparatus may be located either on the roof or in the base ment of the building. Corrosion is prevented in power plants and buildings by Anti-Corrosion Engineer ing Co., equipment by removing the free dissolved oxygen from the raw water. Our process is called DEACTIVATION. This apparatus is made in three distinct types to fit various conditions, of which Both the deoxidizing-deactivator and the deaerating-deactivator are applied to hot water supply systems only and are sufficient to overcome the corrosion problems under most conditions, as corrosion is, much more rapid at higher than at lower tem peratures. there are over 200 now in successful opera tion. Vacuum Type Cold Water Deactiva tors are used wherever the cold water as Deoxidizing Deactivators are used for larger residences, apartment houses, smaller hotels, smaller office buildings and : well as the hot waters supply system have reached a serious condition through the action of rust in the piping and apparatus. In this apparatus the water from the certain types of factory buildings. This type removes the free dissolved oxygen from the raw water by passing.it through I source of supply is taken into the deac tivator under a vacuum where it is me chanically agitated and broken up. The a deactivator filled with a series of per forated plates of a special highly corrosive metal--Sufficient time of contact is allowed to fix the free dissolved oxygen by expending its corrosive activitity upon these plates. The resulting rust is pre cipitated and ejected through blow-out openings. Usually the water is filtered vacuum applied to this tank removes the gases leaving the water free from these agencies which cause corrosion. A removal pump takes the water from the deactivator and delivers it to the house pumps of the building. Both cold and hot water are then delivered under pump pressure to the cold and hot water systems of the building. after leaving the deactivator before going to the house service, in order to remove Where a building is provided with a roof tank this acts as a reserve at any time the the colloidal rust. Proper coagulation is accomplsihed by the passage of the raw pressure pumps should ybe shut down. water through a special coagulant before it reaches the deactivating tank. The effect of the deactivation of the cold as well as the hot water supply is to gradually break down and remove the Deaerating Deactivators are used for the accumulated products of corrosion, re larger 'hotels, larger office buildings and storing full circulation of water and pro institutions, such as hospitals, colleges, tecting the piping against disintegration etc., where a steady supply of steam is which is the cause of leaks. available. The dissolved oxygen and other gases are eliminated from the raw water in this deactivator by heating the water to a boiling temperature under mechanical agitation. The natural expansion process Refer to the GUIDE 1922, for further details and apply to us for specifications, dimensions, weights, capacities, recom mendations, etc. Water Treatment Apparatus H. S. B. W.-Cochrane Corporation Formerly Harrison Safety Boiler Works. 3120 North 17th Street PHILADELPHIA, PA. "COCHRANIZE THE HEATING SYSTEM" The Cochrane Deaerating Heater expels oxygen and other gases from water and thereby prevents corrosion in hot water heating and service piping, economizers and boilers. The water is delivered at any temperature above 140 deg. fahr., using only the amount of exhaust steam necessary to heat the water to the desired final temperature, no steam or heat being wasted. The steam can be expanded in a turbine or engine down to a vacuum cor responding to the temperature at which the deaerated water is delivered. The Cochrane Steam-Stack and Cut-Out Valve Heater and Receiver for use with exhaust steam heating or drying systems, does the work of a heater and of the inde pendent separator ordinarily installed in a by-pass around the heater. The combination occupies much less space .than a heater with an independent separator, in a by-pass, and saves the cost of installing the independent separator. The Cochrane Flow Meter is a simple, reliable and accurate device for measuring water, steam or air flowing in pipes. There are no working parts in the pressure cham bers and no stuffing boxes. The chart divisions are uniform. The pressure connections are included in the orifice plate, eliminating errors from faulty connections. The Cochrane Multiport Back-Pres sure Valve differs from the ordinary back pressure valve in that a number of small discs are used instead of one large disc, thus reduc ing the size, weight and travel of the discs. Each disc has an independent dash pot and is held to its seat by an in dependent spring, the tension upon all the springs being adjusted by a hand-wheel inside the housing. The predetermined back pressure cannot be exceeded. The Cochrane Oil Separator. Exhaust steam purified of oil by passing through a Cochrane Oil Separator is worth as much, pound for pound, as live steam at the same pressure for heating buildings, heating water, etc. The condensed returns will be free of oil. The Cochrane Multiport Drainer removes condensate or drips from heating or drying coils, radiators, jackets, loftpressure steam and oil separators, etc. The balanced cylin drical valve has large ports, and large capacity with low operating pressure. It never feaves its seat, is self-cleaning and is always water-sealed. There are no stuffing boxes, packings, springs or links. 35i