Document rxmdeGKzQygKd2pKdv3D071q7

Controls and Instruments Hubbell Corporation P. 0. Box 700, Hawley Road Mundelein, 111. Designers and Manufacturers of Automatic Control Valves For All Refrigerants 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 Typt DSA-9, 8FD-9 Type SA-5, SA-6, SF-5 and SF-6 Back Pressure Regulating Valves are of the con ventional type used to maintain a constant evaporator pressure. Type SA-7, SA-8, SF-7 and SF-8 Combination Back Pressure Regulator and Stop Valves. This regulator is of the conventional type used to maintain a constant evaporator pressure and the addition of a small electric pilot valve built into the head, makes it a suction stop valve. The DSA-9 and DSF-9 is a dual regulator which will control evaporators with two load conditions requiring different refrigerant temperatures. The diaphragms in the dual head may be set for any two evaporator pressures and will automatically change from one to the other by the opening or closing of the electric pilot valve. The SAC-6 and SFC-6 valves are of the compensating type and are used where a con stant temperature is desired in the medium being cooled. These valves will increase or decrease the evaporator pressure to compensate for the increase or decrease of the cooling load. Operated with air or electricity. The Type "T" suction stop valve is used where automatic suction line control is required. It is operated by high pressure gas and its construction makes a tight closing valve and its dependability far surpasses the conventional magnetic stop valve. All valves have built-in opening steins, which eliminates the by-passes usually used for manual operation. With either screwed, welding type flanges or copper tube connections, in sizes from % in. to 8 in. inclusive. Solenoid Valves from % in. to 2 in. inclusive for liquids and gases with composition seat discs readily renewable, coils for any electrical characteristics, built-in lifting stem standard, with either screwed, welding flanges or copper tube connections. Strainers in all sizes for liquid and gas with very large screen areas and arranged to bolt directly to valve or with screwed, welding flange or copper tube connections for installation wherever strainer is necessary. Write for complete information on these and our many additional Refrigeration Con trols and Accessories. 1310 TYPE 4~F Standard minimum telfor heating and air conditioning air velocity measurements. The Alnor Velometer is an instan taneous, direct-reading air velocity meter designed for convenient, rapid determination of air velocities in air conditioning, heating and ventilating, and exhaust systems. It gives instan taneous direct readings in feet per min ute, without timing, calculations, or reference to tables or charts. Accurate information on performance of equip ment, duct systems, etc., can be ob tained with a few moments inspection with the VELOMETER. 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, 1-Jin. deep. Weight, 8oz. Accu rate, strong. Available in single and double scale ranges: 0-200 to 0-2500 fpm. Bulletin 725 The Alnor Velometer is built in sev eral 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 velocity and 20 in. pressure. 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 doublerange 0-300/100-2000fpm. Accurate readings as lowas5fpm. Temporary Bulletin913-A. 1311