Document EvdG3GQ2wx3MkVOm3qy5vL73j

Heating Systems specuira*- Yarnall-Waring Company Manufacturers of Strain Specialties 133 Mermaid Ave., Philadelphia 18, Pa. YARWAY IMPULSE Construction--Made entirely of bar stock. Only one moving part, valve (F). For pressures to 400 lb, body, control cyl inder, valve and.seat are stainless steel, valve and seat heat-treated; bonnet is cold rolled steel, cadmium plated; cap is tobin bronze. For 600 lb, trap is all stain less steel. Operation--At low condensate tempera tures, bypass through control chamber (K) and center orifice of valve reduces chamber pressure and valve opens. At high temperature, condensate vaporizes in (K), increased volume builds up pres sure and valve closes. Light Weight--Need no support-- in. trap weighs only If lb. 2 in. weighs Sf lb. Small Size--\ in. trap 2J in. long--2 in. trap, 4J in. long. Will not air bind.--Require no priming. Insure quick heating. Low Price--Often cheaper than repairing old traps. Factory set for all pressures to 400 lb (or 600 lb) without change of valve or seat. 850,000 sold. Stocked by 200 distributors. Send for descriptive Bulletin T-1740. YARWAY FINE-SCREEN STRAINERS Offer better protection against rust, scale and dirt for all steam equipment. Ten standard sizes M in. to 3 in. Cad mium plated bodies. High grade Monel woven-wire screens. Many thousands in use. Also flanged strainers, Yi in. to 5 in. Write for Bulletin S-203. List Prices, Weights and Dimensions No. 60 Series--to 400 lb; 120 Series--to 600 lb Size Complete Trap Series 60 Complete Trap Series 120 Weight Pounds Length Inches Vi' $15 $ 25 . lVi m V.' 22 37 2 3 31 52 2H 3M W 48 80 4 3% 1Vi' fi8 114 SH VH 2' 00 150 8M YARWAY EXPANSION JOINTS All-steel welded construction; light but strong. Chromium covered sliding sleeves. Cylinder guide and stuffing box integral, assuring perfect alignment. In ternal limit stops. Gun-pakt and Gland- permit addition of plastic packing while joint is under pressure. Sizes 2 in. to 24 in., single end or double end, flanged or welding ends; 150, 3C0 and 400 lb pressures. Choice of leading utilities and industrial firms. Send for Bulle tin EJ-1913. 1502 Heating Systems WARREN WEBSTER & COMPANY Pioneers of the Vacuum System of Steam Healing: : Since 1888 Main Office and Factory: 1731 Federal St. Camden 5, New Jersey PRODUCTS: Webster Moderator System of Steam Heating; Webster Vapor and Vacuum Steam Heating Systems; Webster Tru-Perimeter Forced Hot Water Heat ing; Webster Baseboard Heating; Walv'ector Radiation; Webster Continuous Flow Hot Water Heating Control; Control Valves; Webster-Nesbitt Unit Heaters; Unit Heater Controls; Convector Radiation; Radiator Valves; Thermostatic Traps; Float-and-Thermostatic Traps; Process Steam Traps; Dirt Strainers; Double Service Valves; Radiator Trap Attachments; Boiler Return Traps and Vent Traps; Lift Fittings; Expansion Joints; Vacuum Breakers; Boiler Protectors; Metering Orifices; Chain Wheel, extended stem and lock-shield key Special Handles for Radiator Valves; Check Valves; Gauges; Grease Traps; Sight Glasses;Hylo Vacuum Controllers; Pressure Difference Controllers; Time Switches; Steam and Oil Sep arators. Complete technical Catalogs are available on request for each product listed. STEAM HEATING SYSTEMS Webster Steam Heating Systems are low pressure, two-pipe systems in which steam is delivered to radiators and other heating surfaces through supply piping and water of.! condensation and air are removed through separate return piping. Webster Radiator Valves and Thermo static Traps are installed respectively on the supply and discharge connection of each radiator. Webster thermostatic or float.and thermostatic traps assure re moval of water of condensation and air from the piping. return is not possible, a Condensation Pump may be substituted for the Boiler Return Trap Combination. Available with vacuum return, or with open return (vented to the atmosphere) with either Condensation Pump or Boiler Return Trap and Vent Trap to return water to the boiler, or with Vent Trap alone where condensate is wasted to the sewer, or in appropriate small installations. Basement installation of Webster Boiler Return Trap and Vent Trap for Vapor Heating, Webster Type ,4R" System. Webster Vacuum System--A conven tional vacuum heating system in which the return mains are joined together and connected to the suction end of one or more vacuum pumps which remove air and water of condensation and assists circulation by maintaining a lower pres sure in the return than in the supply piping. Webster Type "R" System--A twopipe, low pressure or vapor heating sys tem. Water of condensation is returned to the boiler by gravity, prompt return being assured regardless of variations in boiler pressure through the operation of a Webster Boiler Return Trap and Vent Trap in combination. Equipment is available in sizes to care for systems ranging from the smallest to 16,000 sq ft EDR. Where desired, or where gravity Webster Type "V" System--Employs only a Webster Vent Trap. For instal lations of 1000 sq ft EDR or less with oil burner, stoker or gas burner; with vaporstat having cut-in pressure of about yi lb and cut-out pressure of about $4 lb (not pressurestat), lockswitch or protec tor relay and one or more key room thermostats. Vent Trap at ample heigh t above water level. Boiler Protector, or at least a low watercut-out. Ask for Bulletin. Webster Moderator Systems--These are all Webster Steam Heating Systems with vacuum or open return to which are added (a) accurately sized metering ori fices in radiators and other heating sur faces to balance distribution and permit "partial filling" of all radiators practi cally simultaneously and at various 1503