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The Powers Regulator Co. Temperature Control Equipment -CONDENSATION RETURN HE*T SUPPIV Powers No. 18 Regulator applied to Direct Heating System valve or damper motor. Additional tube length will be furnished at 20 cents net per foot. For control of ventilating units or under other conditions of vibration, copper tube,, armored, must be used instead of lead-- . such armored copper tube will be fur nished at an extra net charge of 20 cents per foot for first 50 feet, and 30 cents per foot for excess. * Always specify desired operating tem perature and steam pressure, and state whether latter is constant or fluctuating. Bulletin 145 gives complete infor mation. PRICE LIST AND SHIPPING WEIGHTS OF No. 18 REGULATOR AND VALVE COMPLETE Size Price--Low Pressure___ Price--High Pressure... Shipping Weight (Lbs.). Vi' $50 60 45 3/*' *55 65 48 1' i'/.' Vi' $60 *65 *70 70 75 80 50 55 60 2" I'/i" 3' y/i' V $90 $i25 $145 *175 $185 65 no 120 160 170 No. 15 Regulator, self-contained, for the con trol of. drying rooms, dry kilns, ovens, etc. Bul letin No. 138. Dial Thermometers for air ducts and hot .water tanks. Accurate, easy to read, reasonably priced. Bulletins No. 140 and No. 155. - High Pressure Steam Trap, % inch and H inch sizes only, for pressures from 5 lbs. to 125 lbs. Used on restaurant fixtures, hospital sterilizers, heating coils, cooking kettles, etc. Bigger capacity than any other trap its size. Acts quickly, closes tight. Gives years of dependable service without replacement of thermostatic element. Bulletin No. 115. Hospital Sterilizer Control Valve--Makes sterilizer noiseless and saves steam. Bulletin No. 122. Thermostatic Steam and Water Mixer-- Automatically heats cold water with high pressure steam and delivers warm water at any temperature up to 120 deg. fahr. Bulletins No. 137 and No. 137-A. Style D Steam and Water Mixer--Small, non-thermostatic mixer; supplies warm water for wash sinks, shower baths, and processes requiring a low cost warm water supply. Safe against scalding, easy to install, noiseless. Heats only the amount of water desired at the time. Capacity 10 gals, per min. with 40 lbs. pressure on supply lines. Bulletin No. 137-A. Pressure Reducing Valve for steam, air and water. Simple, durable, accurate. Bulletin No. 118. Complete set of bulletins describing the entire Powers line will be sent upon request. 546 Valves The Dole Valve Company 1913-1933 Carroll Avenue, CHICAGO, ILL. Manufacturers of High Grade Radiator Valves and Brass Specialties WVENTING 5EAT- THE DOLE SYPHON AIR VALVE (7)VALVE CASING (non adjustable, automatic) For venting low pressure steam radia C2)5EATING PIN tors. Fully guaranteed for five years. It has the Venting Seat (1) of heavy con (3) FLOAT- struction, threaded and brazed into the valve casing. The Seating Pin (2) of finely machined hard metal is hydraulically DINNER CHAMBER pressed to a perfect radius, while the OF FLOAT Float (3) is of light but strong annealed brass, which rises when water enters the (5) DIAPHRAGM valve, positively preventing leakage. The Inner Chamber of Float (4) contains the fo) FLOAT proper amount of thermostatic liquid which forms a powerful gas when steam comes in contact with the float, thus the diaphragm is expanded and the valve closed against the escape of either steam or water. The Diaphragm (5) is made from special spring bronze, convex in shape and cor- rugated. The Float Rest (6) is one piece of finely drawn brass open on four sides to permit water to drain through the syphon, and the Valve Casing (7) of beautiful dodecagon design, fashioned from finely drawn heavy brass presents an attractive exterior and at the same time forms perfect air channels inside the valve. The Base (8)'of heavy drawn brass threaded on the interior to meet exterior threading on the casing is firmly brazed to insure great strength and durability. The Connecting Nipple (9)--one piece of extra heavy drawn brass has in. standard iron pipe thread, which conforms to the requirements of all radiators. A Syphon Lock Collar (10) made from extra heavy brass firmly brazed to the syphon prevents either accidental or intentional removal of the syphon from the valve. (Note, the valve can be. removed from the radiator without the syphon becoming detached). The Syphon (11)--one piece of annealed brass tubing, is perfectly formed to fit inside the radiator column. Assembled into the vaive free from obstruction, thus preventing interference when the valve is attached to the radiator. Regarding the finish, the entire valve is finely nickel plated, of an artistic design and highly polished. A real "beauty" and it works. List Price........................... .................................... ........$1,50 THE DOLE STRAIGHT SHANK QUICK VENT AIR VALVE For quick venting the ends of steam mains, specially useful for venting hot water generators and low pressure feed water heaters where a straight shank valve is required. Made from similar material, constructed in like manner and operates on the same principle as the Dole Syphon Air Valve. Made in two sizes--Y arid Y in. List Price................ ........................................................$2.00 547