Document wJqKgBDr917R1EVVvxG41123

Controls and Instruments Julien P. Friez & Sons (Division of Bendix Aviation Corporation) Baltimore Maryland Established in 1876 -vu my Manufacturers of a Complete Line of Automatic Electric Controls for Industrial and Comfort Applications. Also a Complete Range of Recording and Accurate Measuring Instruments for Indoor and Outdoor Applications Humidstat--accurate for long periods and over com plete range: double length human hair element. Bulle tin AA. Thermostat -- sensitive, accurate for highest grade work. Bulletin TT. Comfortrol -- effective temperature Thermostat re setting itself as prevailing humidity varies, using human hair compensating element. Exclusive. Bulletin E. Hand Aspirated Psychrometer--replacing `slings', no whirling; re liable, immediate reading; thermometers perfectly ventilated by typical air, in duced by venturi action with hand operated bellows. Ex clusive. Bulletin S. perature varies. placed at window in doors, positively pre venting condensation from excess humidity. Controls humidity sup ply just below critical point as outdoor temExclusive. Bulletin W. Portable-Recorder-- for surveys or tests of humidity and tempera ture. Inked records on charts the size of filing cards (3" x 5" ). Exclusive. Bulletin G. Microstat--Small sized ther mostat, featuring powerful Alnico magnets. Though priced with the lowest, unsurpassed for accuracy and fine appearance. Bulletin TM. Magnetic Gas Valve-- New principle, free floating disc, no diaphragm; quiet, durable; range of sizes; low priced, low voltage, espe cially suited for control by Microstat pictured above. Exclusive. Bulletin VG. Remote Reading Temperature and Humidity Recorder--Electrically opera ted; humidity uniquely recorded from distant location directly in percent rela tive. Exclusive. Bulletin R. Hydraulic Action A new and complete line of controls for warm air, hot water and steam systems, industrial ovens, space heating, air con ditioning and refrigeration. Per manently accurate, rugged, at competitive prices. Bulletins CR, LC and TS and Data Sheet 225. Write for Bulletins MODERN ADVANCED CONTROLS FOR MODERN NEEDS 946 Controls and Instruments Henry Valve Company 1001-19 North Spaulding Ave., Chicago, III. Manufacturers of Complete line of Dryers, Strainers and Line Valves for Freon, Methyl Chloride and Sulphur Dioxide. Also Ammonia Valves and Forged Steel Fittings. tains uniform tension on dehydrant at all times and compensates for changes in volume. Soldered or Flanged Shells-- models are available with either soldered cap or flanged end shells. Flange is dis tortion-proof. Shells not exceeding 5M in. in length are drawn in dies, so that they have only one joint. VALUE OF BALANCED ACTION Regardless of operating conditions or the differential in the pressure above and below the valve seat, ``balanced-action" assures positive and instantaneous opening. The balancing action is really the equalizing of the pressures on the two sides of the valve seat at the instant of opening. This is accomplished by a channel in the axis of the valve stem. When the valve is closed, the upper port of this channel is sealed by the diaphragm assembly itself. At the instant of opening, the pressure above the seat forces the diaphragm assembly up ward, exposing the upper port of the balancing channel. The pressure is re leased through the channel to the region below the seat, equalizing the pressures, thus assuring positive opening. A springtensioned ball check seals the channel for diaphragm inspection. Other important features are Ovaline handwheel, ports - in - line, non - rotating bearing plate to protect diaphragm from rotating friction of stem, and use of mul tiple puncture and fracture-proof dia phragms designed to resist wear and corrosion. Available in a complete range of sizes with flare and solder connections. ABSO-DRY PRESSURE SEALED DRYERS For Refrigeration and Air Conditioning The exclusive Henry vacuum process first removes every trace of moisture, then the dryer is charged with dehydrated air. Loos ening a seal cap prior to installation produces hissing sound, a guar antee of original fac tory dryness and free dom from leaks. OTHER FEATURES OF HENRY DRYERS--Perforated Dispersion tube is connected to inlet port and exposes entire volume of dehydrant ^to^penetration by refrigerant. Minimum pressure drop. No channelling. Compression Spring main FOUR DEHYDRANTS--Choice of following dehydrants at same price: Ac tivated Alumina, Calcium Chloride, Calci um Oxide and Drierite. Silica gel is sup plied at a slight premium. Type 744 Cartridge Dehydrator A flanged shell dehydrator with replaceable cartridge. Type 712 Dehydrator Soldered brass shell dehydrator with dis persion tube and compression spring. HENRY STRAINERS There is a size and type of Henry Strainer for every installation requirement. Type 895 "Y" Strainer With solder fittings for use with cop per pipe. Exceptional design. Welded steel construc tion. Negligible pressure drop. Screen can be taken out for cleaning without removing strainer from line. Very large screen area. Light weight. Baffle prevents heavy particles injuring screen. WING CAP VALVES Designed especially for Freon and Methyl Chloride. Have patented rotating selfaligning stem disc. Special resilent pack ing. May be repacked under pressure. Wing cap can be inverted and socket used for operating valve. Screw end, soldered and flanged connections. 947