Document EdbRL5QdKyvpz887ggNrLNQLj

Specialties, Heating G. M. Davis Regulator Company 407 MILWAUKEE AVENUE CHICAGO, ILL. New York Office, 71 Fulton Street Manufacturers of Automatic Valve Specialties Pressure Regulator--r Diaphragm Type Large diaphragm insures sensitive action under low service pressures as required in heating. Steam Trap--Continuous Flow Type Duplex balanced valves give unusually large capacity. Works on any pressure without alterat:on. Will . discharge into a vacuum line. Pressure Regulator --P i s t o n Type Automatically makes any pressure re* duction. Has visible action and may be hand tested. Float Valve--Globe and Angle Patterns Used on makeup line to open tank--maintains constant level. Has no internal packing--closes tight. Can not stick. Fig- V& Back Pressure Valve A noiseless, double ported, semi-balanced valve for maintaining exhaust steam pressure of 20 lb. or less. An accessible unit for controlling the level in a closed unk. Se also for distant control. 744 Specialties, Heating C. A. Dunham Company General offices: Dunham Bldg., 450 East Ohio St., CHICAGO, ILL, Factories: Marshalltown, Iowa, Michigan Cm, Indiana and Toronto, Ont., Can. *' Eastern Division Offices 101 Park Avenue. New York, N.Y. Central Division Offices 450 E. Ohio Street, Chicago, 111. Western. Division Offices 617 W. 7th Street, Los Angeles, Calif. Albany; N.Y.' 91 State StT Allentown, Pa., 11 S. 5th St. Atlanta, Ga., Forsyth Bldg. Baltimore, Md., 206 Water. St.. Bangor, Maine, 104 Exchange St. Bellingham, Wash., 1107 State 8t. Birmingham, Ala., 507-509 Twenty-second St, North Boston, Mass., 136 Federal St, Boston 9 Buffalo, N.Y., 232 Delaware Ave. Chattanooga, Tenn., Volunteer Bldg. Chbtzhne, Wto., 510 W. 25th St Chicago, III., 450 East Ohio St Cincinnati, Ohio, Union Trust Bldg. Clarksburg, W.Va., Exponent Bldg. Cleveland, Ohio, Un on Trust Blag. Columbus, Ohio. Comstock Bldg. Dallas, Texas, Dallas Nat'l Bk. Bldg. Davenport, Iowa, Security Bldg. Denver, Colo., 414 West Colfax Ave. Dbs Moines, Iowa, Old Colony Bldg. Detroit, Mich.. 2938 E. Grand Blvd. El Paso, Texas, 401 N. Santa Fe St (P.O. Box 240) Gabt, Ind., 1842 W. 5th Ave. BRANCH. SALES OFFICES . Gloversville, N.Y., Zl So. Main St Grand Rapids, Mich., Michigan Trust Bldg. Greenville, S. Car., P.O. Box 563 Harrisburg, Pa., 2216 N. Fifth St Huntington, W.Va., 215 Hines Bldg. Indianapolis, Ind., Board of Trade Bldg. Ibonwood, Mich., The Albert Bldg. Johnstown, Pa., 244 Market St Joliet, III., P.O. Box 1086 Kalispell, Mont., 1 .Whipps BIk. Kansas Cm, Mo., City Bank Bldg., 18th and Grand Ave. Kingston, Pa;, 101 S. Walnut St. Los Angeles, Calip., 617 W. 7th St Louisville, Kt., Starks Bldg. Memphis, Tenn., 15 So. 4th St. Milwaukee, Wis., Empire Bldg. Minneapolis, Minn., 132 So. 10th St New Haven, Conn., 107 Grand Ave. New Orleans, La., New Orleans Bank Bldg. New York, N.Y., 101 Park Ave. ' Newark; BftJr; 972 Broad St. ` Omaha, Neb., Peters Trust Bldg. Peoria, III., Peoria Life Bldg. Philadelphia, Pa., 1500 Walnut St. Providence, RL, 49 Westminister St. Pittsburgh, Pa., May Bldg. Portland, Ore., Buyers Bldg. Pueblo, Colo.. Colorado Bldg. Qurncr, III., 628-638 Jersey St Rochester, N.Ym Mercantile Bldg. Rockt Mount, N. Car., P.O. Box 1076 St. Louis, Mo.. 3605 Laclede Ave. Salt Lake Cm, Utah, Dooly Bldg. San Antonio, Texas, Travis Bldg. San Francisco, Calif., Monadnock Bldg. Seattle. Wash., 415 Lenora St Spokane. Wash.. 614 Peytoo Bldg. Syracuse. N.Y.; O.C.S.B. Bldg. ^ Toledo, Ohio, 1918 Vermont Av Trenton, N 219 EL Hanover St . Tuiaa, Okla., Cosdea Bldg. Washington, D.C., Munsey Bldg. White Plains, N.Y., 199 Main St (Bar Bldg.) Wichita, Kas., 1100 E. Douglas Ave. C. A. Dunham Co., Ltd., 1523-41 Davenport Road, . Toronto, 4, Ont., Canada. Sale* Offices: Calgary, Alta.; Halifax, N.S.; Montreal, Que.; Ottawa, Ont; Quebec, Que., St Johns, Nfid.; Toronto, Chit; Winnipeg, Man.; Vancouver, B.C. C. A. Dunham Co., Ltd. (of The United Kingdom) IS St. Thomas St., S.E. 1, London, England. Agencies: Birmingham. Eng.; Leeds,' Eng.; Liverpool, Eng.; Newcastle-on-Tyne, Eng.;Glasgow,Scotland; Belfast, Ireland; Paris, France; Gothenburg, Sweden; Welling ton, N.Z. HEATING SERVICE This Service is delivered through over Branch and Local Sales Offices throughout the United States, Canada and the United Kingdom. These Branch and Local sales offices bring Dunham Heating Service as close to. your office as your telephone. Consult your telephone directory for the address of our office in your city. An engineer will counsel with you on any project. DUNHAM DIFFERENTIAL VACUUM HEATING SYSTEM . A clear conception of the underlying principle is necessary in order to obtain the best results possible. The engineer should know what the Dunham Differen tial Vacuum Heating System really is, in order to take full advantage of its pos sibilities. The system uses steam as a heating medium. This steam is supplied from the boiler direct ..or through controlled valves to the radiators at varia ble temperatures from 133 deg. up to 212 deg. and higher if so required. The 133 deg. temperature cor responds to 25 in. of vacu um at sea level, and 212 deg. to zero on the gauge. 745