Document n9a6L57VN2JKROp7qmjO16K7z

Heaters, Hot Water Davis Engineering Corporation HEAT TRANSFER SPECIALISTS SINCE 1915 Branch Office: 90 West Street New York City `Rar&coii General Office and Factory: Elizabeth, N. J. PRODUCTS--Davis Automatically Fired Boilers, Paracoil Storage Water Heaters, Instantaneous Water Heaters, Fuel Oil Heaters, Oil and Water Coolers, Distillers, Feed Water Heaters, Feed Water Filters and Grease Extractors, Steam Traps, Evaporators, Converters, Preheaters, Hot Water Generators, Condensers, Heat Exchangers Years of trouble-free service without excessive maintenance charges have been the aim in the design of Paracoil appara tus. Paracoil Heat Exchange Products are preferred by many leading industrial, naval and building engineers. Many large ships and famous buildings have Paracoil heat transfer equipment. Special heat transfer problems invited. Write for bulletin on products in which you are interested. PARACOIL INSTANTANEOUS U-TUBE TYPE WATER HEATER Ideal for apartment houses, hotels, etc. Connected below water line of boiler, heats water supply when fires are banked. Castiron or steel shell, heating elements of seamless drawn copper. Capacities 300 gal. and up (below water line installation) or 20 gal. and up (live steam installation). Catalog on request. PARACOIL STORAGE WATER HEATER For heating and storing hot water for apartment houses, office buildings, hospi tals, laundries, etc. Operates with boiler water, exhaust or live steam as heating medium. Steel plate storage water shell with removable seamless drawn copper heating coils. Maximum efficiency of heat transfer. Any pressures specified. Capa city 40 to 25,000 gal. per hour. Capacity tables, calculating data, etc. on request. Write for catalog. TUBULAR HEAT EXCHANGERS For cooling lubricating oil or water and similar heat exchange uses. Removable or non-removable tube bundle as required. Transverse or Longitudinal Baf fling as required. Floating tube sheet and head construction or shell expansion joint compen sates for expansion and con traction strains. Built in single and multi pass types. Small space requirements. Write for information. PARACOIL FUEL OIL HEATER, TUBULAR AND COIL TYPES Rand System of Fuel Oil Preheating in Storage Tanks Efficient and compact, removable heating element, freedom from ex pansion and con traction strains. Designs permitting easy cleaning. Turbulent flow of oil assures high heat transfer. Unusually low pressure drop or friction loss. Variable baffle spacing gives vari able velocity in pro portion to change in viscosity. Hori zontal or vertical installation. Write for catalog. mft n UUHUivj Section of Paracoil Tubular Heat Exchanger 928 Instruments The Bristol Company Pioneers in Process Control Since 1889 Waterbury, Connecticut Akron, Ohio Birmingham, Ala, Boston, Mass. Branch Offices Chicago, III. Denver, Colo. Detroit, Mich. Los Angeles, Calif. New York, N. Y. Philadelphia, Pa. Pittsburgh, Pa. St. Louis, Mo. San Francisco, Calif The Bristol Co. of Canada, Ltd., 64 Princess Street, Toronto, Ont. Bristol's Instrument Co., Ltd., Pomeroy Street. New Cross, London, S. E. 14 TRADE-MARK BRISTOL'S REO. U. a. PAT. oprice Recording Pressure Gages Recording Pressure Gage Model 49M For securing continuous day and night records of pressure or vacuum for steam, air, gas and liquids. Furnished with charts reading in pounds, ounces, feet, inches, metric or any other desired units for ranges from full vacuum to 12,000 lb per sq. in. Recording Indicating Thermometers For all commercial ranges from 60 F below to 1000 F above zero. Electric Indicating Thermometer indicates temperature at any number of distant points. Metameter for Telemetering Consisting of (1) a recording receiver in your office or other central place, (2) a transmitter at the far point where the measurement is made, and (3) a simple circuit of two small gage wires (or any existing telephone line) for carrying the electric impulses automatically sent out by the transmitter, the Metameter tells accurately and instantly how pressure, temperature, or flow is' fluctuating at any point a hundred feet or several thousand miles away. No interference with or from power, light or telephone lines. Easy to read 12 in. diameter chart,^with, wide open scale. DiC. or A.C.; 25 or 60 cycles; self-checking. Metameter Transmitter, Model MS6T Automatic Tempera ture Control A complete line of Auto matic Control Instru ments is available for temperatures up to 3000 F. These are suitable for application to steam, oil, gas and electric heated equipment. Both electric and air operated models are furnished. Since Bristol makes both control instruments and automatic valves, it is able to develop the complete control system as a unit. It has the experience and facilities correctly to engi neer the system and to assume individual respon sibility for the success of the results secured. Free Vane Temperature Recorder Controller, Direct Reading Model 5S40M Relative Humidity Recorder Chart record shows at a glance the trend of humidity condition. Novel vapor-sensitive hygroscopic element. Special aging process assures sustained ac curacy. Eliminates Thermo-Humidigraph. calculation, and use of Model Ifl99 humidity tables. No water required. No fan used. Accurate below freezing tem perature. Light portable corrosion-resist ing case. Flow Meter for Steam, Liquids, Gas Employs orifice and mercury manometer system of measurement. Meter body is of forged steel, with stainless steel parts in side the mercury chambers. All connec tions are welded or mechanical. The stuffing box is of hardened stainless steel. Grease-packed and leak-tight. For working pressures up to 1000 lb. Special bodies available up to 3000 lb. Industrial Stem Thermometers With plain or red background.. Fixed thread, union connection or socket design. Straight form, or rear oblique, right side and left side angle forms. Wet- and Dry-Bulb Psychrometer Accurate and dependable instrument by which relative humidity or atmospheric moisture may be determined. Available in self-contained and distance types. 929