Document OzVxB3ZNxYqvEoByxO3gJO1pM

Specialties Sterling Engineering Co. 419 Third Street Milwaukee, Wis. Thermostatic Traps, Packless Valves, Return Traps Sterling. Thermostatic Trap The Sterling Thermostatic Radiator Trap is designed for use on both vacuum and vapor heating systems. It is an all brass trap constructed with a vertical diaphragm with a flat seat. The ex pansion of the diaphragm closes the trap against the steam pressure. The vertical seat is a self-cleaning feature as dirt and scale after passing the seat drop down into the return line instead of collecting inside the trap. The dia phragm is the result of long and careful experiments. The metal is carefully Sterling Graduated Packless Valve The Sterling Graduated Packless Radi ator Valve is of the Jenkins Disc Type. A half turn of the handle will open or close it. A graduated dial indicates the degree of opening through the valve. The valve is neat in appearance, easily dismantled as all parts are threaded and screwed together and does not require packing. These valves are furnished with either lever or wooden wheel handles or with lock and shield. Capacities and Sizes No. Size Capacity tested before being used and the greatest care is exercised by skilled mechanics to insure perfection in each diaphragm. ; They are guaranteed to function prop erly for a period of at least five years. j Capacities and Sizes | No. Size Capacity A B C D E F G x* y2 1x lAxl lAxl'A l'Ax 1*4 H 1 xl Dp to 40 sq. ft. rad. 40 to 100 sq. ft. rad. 100 to 150 sq. ft. rad. ISO to 200 sq. ft. rad. 200 to 250 sq. ft. rad. Dp to 40 sq. ft. rad. 40 to 100 sq. ft. rad. IA Up to 100 sq. ft. rad. 2 34. 100 to 200 sq. ft. rad. 3A 200 to 500 sq. ft. rad. 4l 500 to 1000 sq. ft. rad. Sterlco Slide Valve Return Trap . The Sterlco Slide Valve Return Trap differs in principle from other return traps on the market by utilizing the sliding type of valve and besides draining return lines of heating systems and re turning water to boilers, it will lift liquids to higher levels where steam or air pressure is available. Size Return Traps 1 2 3 Sq. Ft. Surface 2000 4000 7000 Inlet and Outlet W 2" 2" Steam Vent Connect. Connect. X" X X" `A X" 'A Height 14" 16" 18" Length . Shipping Overall Weight 20M" 26" 32" ISO 190 250 List Price $100.00 125.00 150.00 320 Specialties Thermograde Valve Company General Office and Factory: Watertown, Mass. Branch Offices in all Principal Cities Steam Heating Systems, Hot Water and Automatic Steam Specialties PRODUCTS; Thermostatic Traps Float Return Traps Modulation Valves Full Opening Valves less in operation and self cleaning. It will not pass steam but will relieve air and condensation from the units of radiation, maintaining their efficiency at all periods. Hot Water Valves Dirt Strainers Automatic Electric Pump and The Special Return Trap operates Receiver High Pressure Steam Traps Automatic Boiler Return Trap Automatic Air Vent Trap Blast Traps automatically, re turning the water of condensation to the boiler at all times regardless of the pressure on The Thermograde Modulation system the boiler, keeping of heating is a two pipe system adapted 1 the system free for use in connection from air and pre with either live or ex haust steam where venting the loss of steam. ' 'the water of condens ation is returned to the boiler mechani cally, or by gravity. It is adapted for use in all classes of build- ings, high grade residences, apartment buildings, schools, hospitals, office build ings, "factories, in fact any building where heat is desired. The Modulation Valve has no stuffing boxes to leak, does not require repacking from time to time and with its self. indicating dial, hand regulation can The Belvac Thermofier is a float operated trap and is used mainly on vacuum sys tems. It passes no steam but the air and water are J released as fast as they accumulate in the units. The trap is never closed against their free pas sage, they are positively and immediately removed. easily be maintained. The Modulated Hot Water Valve has The new improved Auto Valve is a self-indicating dial and can be adjusted factory adjusted but is so constructed that adjustments can be made at in stallation if neces sary due to un to regulate the flow to the various units --this means hand temperature regula tion for gravity or forced circulation hot water heating systems. usual conditions existing. This valve is made entirely of bronze, highly Our interest does not lie merely in selling a number of valves and traps-- we aim at real service. Each and every nickel plated. It has a hand spun ^phosphor bronze diaphragm, no . installation must be an asset, and in our twenty years of experience we have made thousands of satisfied users. springs, entirely automatic, noise Send for literature. 321