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Warren Webster & Company Heating Systems . |`^Water . STEAM HEATING AND PROCESS SPECIALTIES Radiator Valves--Choice of spring re tained packing, Type BW-P or Sylphon Bellows Packless Series 600-S. A in., % in., 1 in., W2 in. sizes. In angle, right and left hand; straightway, with single or double union. Spring retained pack ing. For low pressure vapor and vacuum steam heating service. Double Service Valve--% in. and I in. sizes. Incorporates Webster Thermo static Trap and Webster Radiator Sup ply Valve in a single compact unit. Drips down-feed riser and serves as supply valve to radiator or convector. Saves six fittings and installation work. Thermostatic Traps--Series "7" (dia phragm type) and Series "5" (bellows type) for radiators and drips. A in., % in. and 1 in. sizes. There are six body models for the in. size alone. Maximum pressure, 25 lbs per sq in. For low pressure vapor and vacuum steam heating service. Series "78" for process. in., % in., % in. and 1 in. sizes. Class 2 for pressures of 60 to 150 lbs. Used to discharge air and water from heating coils of any apparatus using steam at process pressures. Heavy Duty or Drip Traps--Series "26" Float-and-Thermostatic for heat ing and air conditioning. Most used sizes: 00026, 0026, 026. Pressures up to 15 lbs per sq in. Made for the pressure and capacity conditions encountered at all drip points. Series "79" Float-andThermostatic for process. For pressures up to 150 lbs per sq in. For use where large volumes of hot condensate must be handled more quickly than is possible by thermostatic traps alone. Dirt Strainers--in. to 6 in. sizes. Maximum working pressure 150 lbs per sq in. Placed ahead of traps in return lines of steam-using equipment and steam heating systems to catch dirt and other particles, preventing them from impairing the tightness of the traps. Boiler Protectors--One size, with % in. connections with or without electrical cut-out switch. Maximum pressure 15 lbs per sq in. Maximum cold water main pressure, 150 lbs per sq in., minimum not less than 25 lbs per sq in. Prevents breakage in low pressure heating boilers when the water level- becomes inade quate. Vacuum Pump Governors--In sizes %. in. to 3 in. Standard valve furnished for pressures up to 150 lbs per sq in. Special valve available for higher pressures. Govern flow of steam to steam-driven vacuum pumps. Suction Strainers--Maximum working pressures 15 lbs per sq in. Installed ahead of vacuum pump to. prevent dirt from damaging pump. Vacuum Breakers--Sizes ZA in., 1 in. and 1% in. adjustable on job. Size H in. for radiators is factory adjusted. For automatic breaking of vacuum at pre determined setting in heating systems, feed water heaters, hot water generators, industrial pressure chambers, etc. Expansion Joints--Crosshead or in ternally guided. In single slip and double slip models in most widely used pipe sizes. For pressures up to 200 lbs. persqin. For steam, hot water, hot oil, hot gas, and condensate return lines. RADIATION AND HEATING SURFACE Webster System Convector Radiation-- Non-ferrous convector radiation. Each Webster System Radiator includes a com plete enclosure of furniture steel with baked prime coat. Contained within the enclosure is a prefabricated unit, combin ing heating surface, valve, trap and union connections, shipped ready to con nect to supply and return piping. Webster System Radiation was first offered in 1932. From its introduction until withdrawal from the market be cause of war conditions, more than 1,000 installations were made. Now, available in an improved design, using the same basic material, copper tubing and aluminum fins. Increased rigidity of the tubing and the develop ment of a new method of manufacturing has produced a fin surface of unusual rigidity, free of expansion and contrac tion noises. Webster Type WI Extended Surface Radiation--Covered by patents and pat ents pending. Completely non-ferrous, being made up of specially annealed cop per tubing with rib-reinforced, square pressed aluminum fins. Available in two fin sizes. 3 in. fin size in 2, 3,4, 5, and 6 ft; 4 in. fin size in 2, 4,6 and 8 ft lengths. Can be used to advantage in many build ings with steam or hot water heating, particularly where floor space or vertical wall space is limited. 1334 Warren Webster & Company Heating SystetHi * tiSHratas WEBSTER-NESBITT UNIT HEATERS Are manufactured by John J. Nesbitt, Inc., Philadelphia 36, Pa., and are distributed solely through Warren Webster & Company, Camden, New Jersey. Designed to circulate large volumes of air .at comparatively low. temperatures, assuring quick heRaatintign.gs of Webster-Nesbitt Unit Heaters are based on tests made in accordance with standard test code of Industrial Unit Heater Association and A.S.H.V.E. PROPELLER FAN UNIT HEATERS ilU ij i .. -imiIiillm.lLidiLi.i,,h.i. IllJliiiUir imnmrir Fig. 1. Standard Propeller-Fan Type. Designed to in corporate four characteristics essentia] to both proper application and satisfactory performance: 1.) Selective range of sizes. Manufactured in nine sizes. Heating capaci ties vary from 34,700 to 338,000 GIANT UNIT" HEATERS Sturdy blower-fan units for the econom ical heating of large areas. Standard (Non- Thermadjust) type. Used principally where beating is by recirculation only, and where constant beat output is desired during period of operation. Fig.s. Blotoer-Fm Type Thermadjust Type Employs dampers in front of casing and over face of heating element to provide Btu per hour. Air deliveries from 470 to mixing of unheated and heated air, pro 4800 cfm. 2.) Quiet Operation. All fans ducing heat output in accordance with have blades of exceptionally large areas requirements and continuous circulation and of a shape to impart a gradual accel of air volume. eration to the air stream. Ample spacing Valve Controlled Type. Unit is of is maintained between the fan and heat standard casing arrangement but ing element. Motors are of sleeve bear equipped with Nesbitt Heating Surface ing type and equipped with isolators. and Steam-distributing Tubes which 3.) Durable lightweight Heating Elements. allows for automatic control of heat Extended fin-and-tube type, constructed output. of copper condensing tubes and plate- Floor mounted, wall mounted, ceiling type aluminum fins. 4.) Modem Casing suspended, from 101,000 Btu, 2580 cfm, Design. Compact suspended type. W-N to 1,008,000Btu, 17,800cfm. Pub.W-Nl28. 126* . . SERIES "R" UNIT HEATERS LITTLE GIANT UNIT HEATERS Adaptable to a A neat, furniture steel cabinet enclos-. wide variety of ing a copper tube, aluminum fin heating applications and element adaptable for steam or forced field conditions. hot water systems; and two to five Seven basic sizes, centrifugal fans belt-driven from an elec each with a choice tric motor. Universal design offering wide flexibility. Especially adaptable where low noise levels are desirable. Variable-pitched motor sheave permits low or high speed operation of fans. of two (some units three) heating ele- Fig. 4. Doyen-Blow Type. ments. The three smaller sizes are of the blow-through type, having lower out let velocities generally intended for the Available in four sizes. Air deliveries with standard drive range from 518 to 1890 cfm. Steam heating capacities range from 158 to 588 EDR. Send for Catalog W-N 133. lower mounting heights of commercial installations. These sizes are made in down-blow type only. The four larger models are of the draw-through type, and produce the high discharge velocities necessary to blow long distances. These four models are available in either hori zontal or vertical down-blow arrange ments. Non-ferrous all-purpose heating ele- . ments designed for steam pressure up to 200 lb. gauge, saturated, and sturdy cas ings of modern design. Heating capaci ties range from 28,500 to 348,000 Btu basic steam ratings. Send for public^' Fig. S. Series "R" Unit Heater. | tion W-N 134. 1335 X