The MARSH REFLUX RETURN LINE VALVE For Low Pressure, Vapor and Vacuum Heating Systems TH WITHOUT LOSS OF STEAM HE Marsh REFLUX Return Line Valve is for use on the return end o radiators of low pressure, vapor and vacuum systems of heating. It is the result of a careful investigation into the actual requirements that must be fulfilled by a radiator return valve, in order that it may accomplish what is desired of it, namely, to free the radiator of air and water without the less of steam and to do so noiselessly. Write for literature fully describing this valve JAS. P. MARSH & CO. Established 1865 118-124 South Clinton Street, CHICAGO Manufacturers of Gauges for all Pressures and Purposes. Get Acquainted With Thousands of Mueller Regulators are in daily use on Your problem, simple or difficult, will find its solution here. We would be pleased to take it up with you. Type 13160 shown here reduces from any pressure to as low as 5 pounds vacuum. It has a wide range-water, gas, steam, oil, air, oxygen, acetylene, etc. D-13160 Please mention THE HEATING AND VENTILATING MAGAZINE when you write. One Turn Opens and Closes the SYRACUSE PACKLESS RADIATOR VALVES Packless Packless with Union Packless Globe Valve, with Male Union Packless Standard Globe Valve for High Pressure Unexcelled in workmanship, material and design. Made with metal-to-metal joint between top and bonnet, with another leakproof joint around the valve stem. The disc is held in place by a bronze noncorrosive spring, and the tension at all times holds the composition disc against the upper seat, making leakage impossible under all circumstances. The disc holder, which holds the composition disc forming the lower seat in the valve, is spun on the disc carrier in such a way that it may revolve, and allows the carrier to take its seat properly when closed. The Syracuse Packless Standard Globe Valve is of bronze Send for "Inside Information on The Syracuse Packless Radiator Valve" SYRACUSE FAUCET AND VALVE CO., SYRACUSE, NEW YORK EVERY HEATING SYSTEM EQUIPPED WITH THE Morehead Back to Boiler is working far more effectively and economically than it possibly could without the Morehead. In a Morehead-drained heating system, all the steam lines are hot and active all the time. And, too, MOREHEAD TILTING RETURN TRAP every drop of condensation is returned to the boiler, without heat loss, and at a cost 'way below that of any other method. The Morehead operates with 10 per cent. to 15 per cent. of the steam required to run a pump, and handles water of any temperature. Is saving 10 per cent. to 30 per cent. in fuel. Cuts out pump repair expense. The Morehead Catalog contains valuable 'Morehead Mfg. Co. Address Heating Department 124 The above cut shows one of the Hackney Noiseless Blowers, which when used in connection with their system of ventilation, fully covered by patents, is guaranteed to be the only system sold or made that will bring in the necessary amount of fresh air according to what the premises are used for, their area and the number of occupants, keeping them to almost a state of purity, which we are enabled to do, because we remove the same amount of foul air at the same time. All this is done without draughts or chills, causing sickness. You will observe we thus keep the air in perfect balance. No other system, as you probably are aware, can do this. We can distribute anywhere between three thousand and ten million cubic feet of air per hour. Our blowers, besides being noiseless, will give more air with less horse power than any other blower of equal dimensions, thus making our system specially suitable for churches, schoolhouses, theatres, etc. Write us for prices, catalogues, etc. Agents wanted. Please mention THE HEATING AND VENTILATING MAGAZINE when you write. HORIZONTAL READING "TYPE" Used on Atmospheric Steam Heat- Placed at top of radiator makes These valves are guaranteed not to stick. The Conservation of Heat Units-100 Per Cent. Efficiency Write for Free Bulletin No. 127 and Booklet "G" The Heating and Ventilating VOL. XI. Magazine Contents for March, 1914 Ventilation for Engine Rooms Air Washing and Cooling System Installed in Plant of American Mfg. Co., Data for the Heating and Ventilating Engineer Amzi T. Rogers 21 How To Measure Air Velocities with a Pitot Tube 27 John R. Allen 30 Cooling Two Rooms in a Country Residence The Consulting Engineer 26 Heating a Room with a Mezzanine Floor. Elbert Hubbard on Trade Papers. 6. Relationship Between Architects and the Massachusetts District 33 35 41 42 Linus G. Foster 43 44 American Society of Heating and Ventilating Engineers New York Chapter Discusses Fan Selection. 45 45 46 48 |