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Controls and Instruments UBBELL CORPORATION HAWLEY ROAD * MUNDELEIN, ILLINOIS Telephone MUndelein 6-7330 Chicago. ROgers Park 1-1224 c & S Equipment Co., Inc., Los Angeles, Calif. H. W. Baker Co., San Francisco, Calif. McCartney-Denver CoDenver, Colo. Shinwa Trading Co., Tokyo, Japan Groenevela Van Der Poll & Co., Amsterdam, Holland T. M. Hall Ltd., Montreal, Canada Refrigerative Supply Ltd., Vancouver, B.C. jenkinson & Co., Ltd., Toronto, Canada Jaleel Bros., Pakinstan John R. Ellstrom & Assoc. Norristown, Penn SEVEN NEW SECTIONS Solenoid Valves for Refrigeration Solenoid Valves for Air, Water, Brine Pressure Regulating Valves of all Types. Compensating Pressure Regulating Valves--air--electric--thermal Miscellaneous Accessories Repair Parts and Kits Engineering Data NEW CATALOG NO. 57 NOW AVAILABLE The new No. 57 Hubbell Catalog has seven complete and distinct sections. Each section describes in detail the construction of the controls--complete and detailed description together with application data. The engineering section contains com pletely new and original data and tables useful every day in the design and applica tion of refrigeration systems. The Hubbell line of controls consists of solenoid valves ranging from in* in size to 8 in. Solenoids are suitable for water, air, gas, oil, chemicals, and all types of refrigerants. All Solenoids are furnished with the new Hubbell "Dripak" water proof, life-time coil. r The Hubbell line of regulators is available in sizes in. to 8 in. inclusive. They are suitable for all types of refrigerants and are manufactured in many different types. Straight back pressure regulators, combination regulators and stop valves, ,"/ reverse acting regulators, bottom seating regulators, dual pressure regulators, coinpensating regulators air operated, electrically operated and thermal operated, hot j - gas defrosting systems, constant liquid pressure controls, vacuum type regulatoi^ and many other special types and applications. Write for your copy of Catalog No. HUBBELL-ize with "Service Free" controls. -s^g' 9n Controls and Instruments Illinois Testing Laboratories, Inc. Room 516, 420 N. La Salle St., Chicago 10, 111. Precision. Instruments for Every Industry The direct-reading ALNOR VELOMETER TYPBi-F Standard minimum telfor heating and air een&Uorrinp air priceUp measurement*. The Alnor Velometer is an instantaneous, direct-reading air velocity meter designed lor convenient, rapid deter mination of air velocities in air condi tioning, beating and ventilating, and exhaust systems. It gives instantaneous direct readings in feet per minute, with out timing, calculations, or reference to tables or charts. Accurate information on performance of equipment, duct sys tems, ete., can be obtained with a few momenta inspection with the VELOM ETER. It can be effectively used to locate drafts and leaks around windows and doors, or in duct systems. Alnor Velometer, Jr. A miniature, di rect reading Velometer--4 in. high, 3 in. wide, l-f in. deep. Weight, 8 oz. Accu rate, strong. Available in single and double scale ranges: 0-200 to 0-2500 fpm. Bulletin 725. The Alnor Velometer is built in several standard ranges from 20 fpm to 6000 fpm, and up to 3 in. static or total Pressure. Special ranges available as low as 10 fpm and up to 25,000 fpm Alnor Thermo-Anemometer. For accu rate measurement of low air velocity. Compact, direct-reading, battery oper ated, self-contained, portable. Scale 6 in. Meter ranges: 0-600 fpm and double range velocity and 20 in. pressure. 0-300/100-2000 fpm. Accurate readings as low as 5 fpm. Temporary Bulletin 913-A. 291