Document o8OBbak3rg06LQ9V72aNBJMg

D. G. C. Trap and Valve Company, Inc. I E. 43 Street New York Murray Hill 2-7320 Makers of Cryer Radiator Control Valves, Radiator Traps and Steam Trapi Distributors in Ail Principal Cities The Cryer Radiator Control Valve What the Valve Does The Cryer Radiator Control Valve gives two-pipe steam systems the same operating economies and the same delightful range of medium temperatures as provided by hot water heating systems, while maintaining the inherent advantages of steam heating such as low first cost, flexibility of con trol, etc. The Cryer Radiator Control Valve con trols the steam flow into the radiator in an entirely new and unique way, and in addi tion mixes the steam with the air and vapor already in the radiator. Then it cir culates this humid mixture of air and steam continuously throughout the radiator. Not merely admitting steam to a few sections. Mixing a small quantity of steam at about 212 with a larger quantity of relatively cool air produces a heating medium very much below steam temperature. The temperature of the whole radia tor may be varied at will by increasing or decreasing the amount of steam supplied through the radiator control valve. The possible variations of temperature are ap proximately those obtained with hot water, from 90 to212 F.( if desired. When opened less than this valve heats the entire radiator to one temperature, 150 for ex ample, and holds it there. Where Used The Cryer Radiator Control Valve is not part of any one heating system, nor is its use confined to any particular system. It can be installed on any steam system, whether vapor, vacuum, or gravity. How the Valve Operates When the disc is raised, the slot D is gradually exposed, allowing a small amount of steam to flow through it. This steam passes into the nozzle and through the Venturi tube F. This flow creates a partial vacuum at G. The incoming steam shoots across the top of the radiator, descends to the bottom, thereby being mixed with the gases and vapor in the radiator. The partial vacuum at G draws the steam and air mix ture in the nearest section of the radiator up arid around the Venturi tube. When this mixture reaches G it is struck by the incoming jet of steam and recirculated. Paris of Cryer Radiator Control Valve A--Valve disc holder. E--Nozzlefor directing B--Rounded Seat. r, .. , , , , C--SUm, attached la calx D--Slotfor entrance ofsteam. _ .. _ tteam. F--Modified Veniun Tube G--Vacuum Chamber. H--Spud. I--Tight Upper Seat. When the disc is raised above a certain point, the entire seat is exposed, allowing a full opening of the valve and the maxi mum amount of steam to flow through it. This steam enters the radiator through the large port over the nozzle E as well as through the nozzle, and flows through the spud H as well as tube F, thus providing a means of quickly filling the radiator. Seven Important Advantages N Saves Steam. Exhaustive engineering tests have frequently demonstrated that a radiator with Cryer Radiator Control Valve opened one-eighth, uses only one-tenth of the steam used when valve is opened full. Gives Comfort and Economies of Hot Water. Use of Cryer Radiator Con trol Valves on steam systems gives the benefits of hot water heating in health and operating cost, plus the economy of steam heat as to first cost. They Cost No More. Cryer Radiator Control Valves cost little or no more than plain radiator valves with no control, and considerably less than many modulating radiator valves. " 892 G. C. T)rap and Valee Company, Inc. Valves Eliminate Trouble.on Return Line. ,ie Cryer Radiator Control Valve thorifighly prevents the passage of steam into vhe return line. Only condensate and air go into the return line. This prevents trouble with return lines due to steam leakage. Used with Any Trap or on Gravity 'Systems. Any ordinary radiator trap may fie used with the Cryer Radiator Control Valve on the usual vacuum system. The live will also operate on gravity lines. No Special Installation. The valve comes to the job complete and ready to ftfise. It is not necessary to waste time ad justing it to suit the size or location of the radiator. It is not necessary to make comftplicated internal adjustments or to insert :ft discs or change it to suit local conditions ../' and variations in steam pressure. There are no delicate adjustments to get out of V order. vr*-:- Attractive and Substantial. The valve body is a bronze casting of exceptionally heavy design and strength. The working parts are of brass and have strength and long life. The entire valve is nickel plated with a smooth polish on certain parts, and presents a very attractive appearance. Number Weights and Sizes InJet Size Radiator Capacity Connection Square Feet 1 2 Yvcf 'VC VC 20 60 3 1* \" 200 4 w v/c Above 2U0 Nickel finish. Approximate shipping weight, 2% lbs. . Extension hn.milpa or special designs can be furnished. SPECIFICATIONS All radiators or other direct heating units, except as other wise noted or hereinafter specified, shall be equipped with the Cryer Radiator Control Valve, as made by the D.G.C. Trap & Valve Co.t Inc. These shall be of the angle or corner type and constructed of bronze with nickel finish. a The J-M Ball Steam Trap For heavy duty, high or low pressure. The J-M Bail Steam Trap.is simple, de/ft'pendable, and durable. There is little or no ft/..,servicing, due to the unusual simplicity of 'iJ-kthe Trap design, with only one moving. V" part. The trap is accessible and easily disiy'>' assembled. You are able to inspect it and '`'/.clean it in a few minutes without disconfty, necting the trap from the line, by merely removing the cover. ft-V It has a relatively great capacity, and ft discharges the air along with the conden- sate--an important feature. Small in size v'- and light in weight. CroM-SeeHonaJ View of J-Af Ball Steam Trap Discharging And it is inexpensive. Not only is the initial cost low, but there is genuine economy in maintenance and in saving of steam. The operation of the J-M Ball Steam Trap is as follows: When condensation first flows into the trap at (X) and begins flowing out of the discharge orifice (Y), the ball (2) floats up to and is held against the discharge bush ing (3) by the steam pressure. The dis charge orifice is completely sealed until the water level (W) in the trap begins to rise. Then the buoyant force of the water rolls the ball upward on the face of the discharge bushing (3), exposing either part or the entire area of the discharge orifice (Y), de pending upon the quantity of water enter ing the trap at (X), and the trap discharges both air and water. When the quantity of water entering the trap at (X) decreases, the level of the water drops to the point where the. ball again partially or completely covers the discharge orifice (Y) and is held tightly against the face of the bushing (3). In this way a water seal is provided between the steam in the top of the trap and the discharge orifice (Y), eliminating all possibility of steam leakage. The Cryer Organization v Cryer heating systems and devices have v been installed in thousands of buildings all over the world. Established in 1898, the Cryer organization has been responsible for many of the great advances in the art of heating. 893 S II i