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Controls and Instruments The Fulton Sylphon Company Manufacturers of Sylphon Automatic Temperature Controlling Instruments and Packless Expansion Joints Sales Representatives in Principal Cities Knoxville, Tenn. HOT WATER SUPPLY No. 923 Temperature Regu lator--For controlling water temperature in heaters, open or closed tanks and other equip ment. Operation unaffected by temperature fluctuations at the valve, either above or below bulb temperature. All parts, except steel adjustment spring, made of non-ferrous metals. May be installed in any position. Ranges from 40 -80 F to 290 - 330 F. Bulletin HVG-20. Sylphon Thermostatic Water Mixers Utilize hot water from any storage tank or instantaneous heater, and effectively SPACE HEATING CONTROL No. 885 Automatic Radiator Valve--For exposed radiation. Small, neat, finely finished, adjust able to room temperature desired. Simply replace ordinary radiator valves with these Sylphon Automatic Regulators--no wiring, piping or auxiliary equipment are required! These valves answer the demand for an inexpensive means of providing accurate, dependable space temperature control in rooms, sections or through out large buildings, new or _ old. Similar type valves for Sylphon No. 8ss concealed radiation -- get Automatic Rail- Bulletin HVG-80. ator Valve I regulate the amount of cold water required to temper it to the desired degree, actu- | ally mixing the hot and cold water to gether before delivery. I Temperature No. 902 Sylphon Thermostatic remains con Water Mixer--14 to 181 gpm depending on water pressure stant in spite of fluctua tions in supply water temperatures or pressures. Four sizes with capacities ranging from 5 to 131 gpm. Bulletin HVG^40. REFRIGERATION No. 890 Electric Radiator Control Valve--For either exposed or concealed radiation. Similar in appearance and action to Sylphon Automatic Valves, but operated by an electric wall thermostat. The closing of the thermostat circuit ener gizes a low voltage electric heater coil surrounding a bulb containing a volatile liquid. This liquid expan sion causes pressure on a bellows in the valve head Sylphon No. operating the valve. This 890 Electric provides radiator valve con Control Valve trol from a remote location, permits regu lation of several radiators from a single thermostat, enables a time switch to be installed, if desired, offers effective zone control of large areas at a fraction of the cost of conventional motor-operated valve systems. Bulletin HVG-70. CONTROLS Adaptable wherever brine is used as the refrigerant. Latest development is a "freeze-proof" _ valve (illustrated at left on the No. 9ab-z popular Sylphon No. 945-Z RegRe'gulator ulator). Bulletin HVG-20. PACKLESS EXPANSION JOINTS The Sylphon Packless Expan sion Joint eliminates useless building height, expensive con struction and non-revenue pro ducing space. No costly leaks and repairs, no repacking, always tight, allows heating system to No. 110 Sylphon. operate at full efficiency Write Expansion for Bulletin HVG-140. Joint No. 7 Temperature Control--A self- contained, self-powered regulator for con trolling unit heaters, wall or ceiling type radiators, heating coils in duct-type heating systems; etc. Quickly installed, holds tem peratures within close Sylphon No. 7 Temperature Control {Self-operating) limits. Valve placed in steam line to one or a battery of heaters, thermostat mounted on wall or column. For use on regular heating pressures up to 15 lb. Similar regulators, Nos. 7-2 and 7-3 for 50 and 75 lb pressure and tem peratures up to 170 F. Bulletin HVG-50. 944 The Fulton Sylphon Company Controls and Instruments HEATING AND AIR CONDITIONING CONTROL Almost any type of heating, ventilating or air conditioning system can be advan tageously controlled wholly or in part by Sylphon Regulators. Basic advantages of Sylphon Controls are: Modulating--Maintains ideal conditions --not continually correcting too hot, too cold, too humid or too dry conditions. Compensating--Many Sylphon Regu lators offer compensating control, auto matically raising their low limit setting at a predetermined rate as outside tempera tures fall. Sensitive--Close operating temperature differentials. Quick response. Simple--in design. Rugged Construction--To give years of satisfactory service. Adaptable--Any one of many combina tions of Sylphon Instruments can be ar ranged to control any air conditioning sys tem and to provide exactly the conditions desired. Write for Bulletin SAC--820. The No. 928-C Regulator--Simple, compact yet highly sensitive. Suitable for modulating control of air temperatures in ducts. Bulb is constructed of numerous coils of copper tubing giving sensitivity to the slightest temperature variation. Packless valve eliminates service problem and makes this regulator ideal for installation in inaccessible locations. Suitable for steam pressures up to 15 lb; other types available for pressures up to 75 lb. Regulator 928-C The No. 928-ECC Sylphon Instrument--Room control and low-limit control in a single valve regulator for modulating control of ventilating systems. Main control from an electric room thermostat operating through the electric head " E" on the valve. Low-limit control by Bulb "A" located in discharge duct from the Instrument 928-ECC heater. Bulb "D", located in inlet side of the duct to the heater, compensates Bulb "A". Compensating thermostat can be furnished to raise low-limit setting at predeter mined rate with falling outside temperature. Suitable for steam pressures up to 15 lb. Sylphon No. 971 Differential Regulator--For con trolling room temperature on the cooling cycle, where chilled water or brine is used as cooling medium and where it is desired to have a gradual increase in room temperature as outside temperature increases. This regulator is modulating in action, thereby affords better control over humidity than is procured when usual onand-off type control is employed. Regulator 971 The Sylphon No. 889-C Control--A modulating, dual-function regulator for control of duct heating and ventilating systems--two independent valves in a single body. . Adjustable Thermostat "A" governing Valve "E functions to maintain room temperature from tempera Control 889-C ture of recirculated air. Adjustable Thermostat "B" acts as a low-limit ductstat controlling Valve "F" to maintain minimum discharge air temperature. Bulb " D" compensates Bulb "B" to maintain even discharge air temperature irrespective of demand. Compensated.Therm ostat "B" can also be furnished to raise its setting at a predetermined rate with falling fresh air temperatures, if desired. Suitable for steam pressures up to 15 lb. Sylphon No. 371 Positive Type Damper Motor-- On-and-off control of dampers. Operation controlled by room thermostat, by hand-operated switch, by motor starting switch, etc. Advantages include: (a) motor returns to closed or safety position in event of currentfailure; (b) heat-motor-bulb and motor separate enhances convenience of installation; (c) damper motor lever adjustable; (d) positive, powerful operation. Damper Motor 371 945