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Specialties, Heating The McAlear Mfg. Co. 1901-1907 So. Western Avenue CHICAGO Power and Heating Specialties for Controlling Pressures and Flow of Steam, Water, Air or Gas Pressure Reducing Valves--used in Low Pressure, Vacuum or Vapor heating systems or any other service where close regulation and absolute con trol isrequired. USE Fig. 155 for ini tial pressures up to 150 lb. and re ducing to service pressures 0-10 lb. Fig. 185 Single Seated Valves on dead end service where reduced pressure is below 10 lb. Fig. 245 Spring Weighted type for initial pressures up to 150 lb. and reducing to service pressures above 10 lb. Fig.' 265 Single Seated Valves for dead end service such as cooking tables, kitchen utensils, laundry mangles, etc. Steam Traps--For draining water of condensation from any steam apparatus or steam mains. . Ho. 7SI--Low Pressure, up to tS lbs. Air Elimi nator and Ret u r n Traps-- De signed for automatical ly returning water of condensation from low pressure steam or vapor sys tems direct to boiler and to exhaust the air to at mosphere. CAPACITIES Size Inlet Outlet Steam Vent. Capacity No. In. In. In/ In. Sq. Ft. 0 1 2 3 4 5 `6 |1 1% I'/* \Vi Wl 22 2'/i 2Vi 33 3 v/l 1 Vi . 1,000' I V* 2rfQ0 1 V* * 4,000 1 V* 6,000 Vs 10,000 !% ] 15,000 l'/4 l 20,000 McAlear Dlrect-to-Boiler ` Water Feeders For maintaining constant water line in steam boilers. McAlear Automatic Water Feeders prevent boiler fractures from low water, decrease fuel consumption and reduce maintenance expense. C Reversible Seat SPECIFY Fig. 085 for pressures up to 30 lb. Fig. 695 for pressures up to 125 lb. Fig. 705 for pressures above 125 lb. Fig. 715 for special low pressures. 0 For oil burner installations--rFeeders are equipped if desired, with LOW WATER ELECTRIC CUT-OUTS. The McAlear line of Power, Heating, Gas and Oil Specialties include: Thermo static Radiator Traps, Packless Radiator Valves, Air Vents, Grease Extractors, Dirt Strainers, Vacuum Pump Governors, Damper Regulators, Steam Separators, Back 'Pressure Valves, Water Regulating Valves, Tank Controllers, Gas Regulating Valves, Liquid Level Controllers and many other devices. General Catalogue, illustrating our complete line, will be gladly furnished upon request. 468 Specialties, Steam Mason Regulator Company Boston, Mass. San Francisco, Calif. Montreal, Canada Manufacturers of Pressure Regulators and Steam Specialites {2,,~ZZ, OUCi -a 7* `rt OWIt -JO FOB HEATING AND OTHER LOW-PRESSURE SYSTEMS MASON Pressure Reducing Valves automatically reduce boiler pressure for Steam Heating systems, and for all situations where steam is required at a lower pressure than that of the boiler. Vacuum RepulaJinp Vaite Sire. H"-4" For regulating the amount of vacuum on separate branches of a main vacuum system." Catalog General catalog GIVING FURTHER IN FORMATION AND DETAILS OF THESE AND OTHER TYPES OF REGULATORS, WILL BE GLADLY SENT UPON REQUEST. . Vacuum Pump Regulator. Sites W~4" For regulating the supply of steam to the requirements of a steam driven vacuum pump and thereby automatic ally maintaining a uniform vacuum on the system. Household Water Pressure Regulator Sites H"-/" Designed for domestic service where the city water pressure is too great for economical house use. FJiminaf^a noise in bathroom fixtures, leaking faucets and splashing in bowls and tubs. Strainer Sites H"-6" MASON Strainers for water, steam or air keep piping clean and insure proper operation of regulators and valves in any syRtem. 469 Damper Regulator Made in various sixes for handling damper equipment on both high aba low pressure boilers, operating on forced, induced, or nature! draft.