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Valves, Air Anderson Manufacturing Co. Cambridge, Mass. Manufacturers of. VENT-RITE Air Valves Pioneers of Balanced Radiation--Since 1932 VENT-RITE RADIATOR AIR VALVES VENT-RITE Valves can be regulated to meet the venting requirements of any radiator . . . By means of an 'exclusive type of variable venting orifice," which provides an unlimited selection of Vent Ports, the distribution of steam in one-pipe systems, is positively controlled. VENT-RITE Valves will balance the resistance opposing distribution of steam in a one-pipe job so that there are no lagging radiators. The vent ing capacity can also be restricted at desired points, to prevent overheating in spots. When installed on a thermostatically controlled heating system VENT-RITES can be so set as to allow all radiators to receive the desired amount of heat before the thermostat shuts off. VENT-RITE Valves can be taken apart with the use of an ordinary strap wrench and cleaned. All valves have a conventional union coupling with a heavy gasket which makes the joint leakproof. The adjustment feature is not con spicuous and will not be tinkered with. A wire-like tool is required to set venting rates, and once set by the heating contractor, they stay set. VENT-RITE Valves are made in both vacuum and non-vacuum types. The con. struction of the vacuum type does not depend upon a ball or disc check to maintain vacuum in a system. This is accomplished by a sensitive and positive acting bellows, internally subjected at all times to atmospheric pressure which elongates the bellows, and closes the vent when the internal pressure in the valve is less than the atmospheric pres sure. This pressure differential causes the valve to close, thereby perfecting an inner vacuum seal. VENT-RITE Radiator Air Valves are noisless in operation, positive in action and seal by float action against water. They close thermostatically under temperature and will not leak or sputter. All parts are made of the best material suitable for valves of this type. The valve pins are of nickel silver. The base is made of a brass drop forging. They are attractively finished in chromium plate. VENT-RITE Valves are guaranteed against defective workmanship or material. VENT-RITE BALANCER The VENT-RITE Balancer is designed for installation on automatically fired steam heating systems equipped with VENT-RITE Vacuum Valves (No. 2- I.V.S.) .... Used in conjunction with these air valves, it provides a means for controlling the distribution of steam at every cycle ... It also makes possible the utilization of the advantages of a non-vacuum system plus controlled distribution and the advantages of a vacuum sys tem--and eliminates.the objectionable features of both. In the operation of one-pipe systems this "balancing unit" brings about a far greater heating efficiency and fuel economy than has heretofore been possible . . . Essentially, the VENT-RITE Balancer creates an entirely new steam heating system and insures Balanced Radiation on every heating cycle. The VENT-RITE Balancer is installed on one of the mains and is electrically con nected with the unit operating the steam supply and automatically operates in con junction with the heat control. 1054 Anderson Manufacturing Co. Valves, Air Anderson Manufacturing Co. Cambridge, Mass. Manufacturers of VENT-RITE Air Valves Pioneers of Balanced Radiation--Since 1932 THE VENT-RITE LINE No. 1 AUTOMATIC NON-VACUUM No. 3 STRAIGHT SHANK NON-VACUUM Ys in. side vent for radia tors. Variable venting capacity. Come-apart con struction. Float seal against water. Closes thermo statically under tempera ture. No. 2-IVS VACUUM r Yi >n. side vent for radia tors. Inner Vacuum Seal. Variable venting capacity. Come-apart construction. Float seal against water. Closes thermostatically under temperature. Y\ in. bottom outlet. For risers, mains and convec tion type radiators. Float seal against water. Variable venting capacity. Comeapart construction. Closes thermostatically under tem perature. No. 4-IVS VACUUM J4 in. bottom outlet. For risers, mains and convec-. tion type radiators. Inner Vacuum Seal. Variable venting capacity. Comeapart construction. Float seal against water. Closes thermostatically under tem perature. No. 6-IVS VACUUM Yi in. bottom outlet for risers, mains and con vection type radiators. Inner vacuum seal. Maximum venting ca pacity Ys in. diameter hole. Come-apart con struction.1' Float sea! against water. Closes thermostatically under temperature. STRAIGHT, SHANK NON-VACUUM Yl in. bottom outlet. For risers, mains and con vection type radiators. Float seal against water. Maximum venting ca pacity Ys in. diameter hole. Come-apart con struction. Closes ther mostatically under temperature. VENT-RITE BALANCER A solenoid operated valve for automatically controlled steam heat ing systems . . . Pro vides controlled dis tribution :of heat on every cycle . . . Pro vides quicker venting on mains . . . Provides complete Btu transfer from heat supply unit to radiators . . . % in. bottom outlet. For use only on 110 Ylt9-- 60 Cycles A.C. 1055