Document zQkrkr3Vw0nwKk5rY9Lr1KgRz

Healing Systems Thrush Differential Pressure Relief H. A. Thrush & Company Automatic Dual Control Unit Makers of Thrush Systems Thrush Factory and Offices Electric Water Peru, Ind:,Circulator Thrush Automatic Damper Regulator Thrush System comprises equipment to be added to any unregulated gravity Hot Water Heating plant to make it a "Closed System" operating under additional pressure and with automatic control of damp ers. It increases heat trans mission and reduces fuel consumption. It is made in four types as listed below. DATA and SPECIFICATIONS Class AA Equipment consists of Thrush Differential Pressure Relief Valve, Automatic Temperature Damper Regulator, Pressure Reducing Valve, Copper Bearing Steel Pressure Tank and special Gauge and Thermometer. It is automatic filling. Class A Equipment Reducing Valve, Copper Bearing'Steel Pressure Tank and special Gauge and Thermometer.* It is automatic filling. Class B Equipment Same as above except that it does not have Pressure Re ducing Valve for automatic filling. This is the same as Class AA Equipment except that it has no Pressure Reducing Valve for automatic filling. Class BB Equipment Consists of Thrush Differential Pressure Relief, Pressure Sizes Size No. 0 up to 350 sq. ft. of radiation Size No. 1 up to 700 sq. ft. of radiation Size No.-2 up to 1200 sq. ft. of radiation Size No. 3 up to 2000 sq. ft. of radiation Automatic Dual Control Unit An inexpensive heating system for competitive job. The Automatic Dual Control Unit may be used for small to medium sized hot water heating plants, easily and economi cally, by merely installing the Dual Control Unit in the water supply line. Furnished with or without strainer, as desired. Thrush Differential Pressure Relief Fig. 8 This valve is de signed with large valve area and has a capacity forrelievingexcess pres sure for both large and small installations. The valve seat is submerged in water, so designed that corrosion, or sedi ment accumulation is prevented. It is always Safe. (Tapping ^ in.)-. Thrush Automatic ' Temperature Damper Regulator The operation of this Regu lator depends upon the tem perature change of the water circulat ing through the * heating system and not upon pressure. Fig. 4 Easily installed and very efficient. (Tapping 134 in.). Thrush Electric Circulator Here is a method of assuring positive circulation on any Hot Water Heating job. The Thrush Electric Circulator will pay for itself in less than one season in fuel saving. Highly recommended for oil and gas fired boilers, also for green houses, garages, apartments, store buildings, works perfectly with blower units. Cheaper to install than low pressure steam, vapor or vacuum vapor jobs. 110 or 220 A.C. 60 cycle motor for light or power line. Low operating cost. Any type motor shipped from stock. Tapping Gallons Capacity Radiation Capacity - Price No. 22--2 inch No. 23--3 inch 30 per minute 70 per minute 2300 sq. ft. 6000 sq. ft. $131.25 150.00 Fg. 5 Humidifiers The Bahnson Company BAHNSON HUMIDIFIERS Winston-Salem, N. C. form within plus or minus 5 per cent Variation. Power required is approximately 200 watts per unit for 3-phase, 60-cycle, 110 or 220 volt motors. Single-phase motors require 225 to 230 watts. On account of the unavoidably low-power factor and efficiency of all small motors, allow pne KVA of transformer capacity to each 3 single-phase or 4 polyphase units. All motors are mechanically interchangeable. The Bahnson Humidifier Bahnson Humidifiers are individual, selfcontained humidifying units. In operation water is fed near.the center of a revolving disk from the rim of which it flows off and strikes a series of stationary teeth sur rounding the rim of the disk. A fan mounted on the end of the motor shaft opposite the disk carries out into the air of the room all particles of water which are fine enough to float in the air. This fan also provides the proper degree of air movement for thorough moisture distribu tion. The speed of the disk is such that when the water leaves the rim' of the disk it strikes the teeth with an impact cor responding to the speeding velocity at approximately 110 lb. pressure. Due to the method of producing finelydivided water particles, the amount evaporated by each unit may be varied without sacrificing efficiency, the per centage of feed water evaporated being practically constant throughout the range of the unit. The actual amount evaporated is around 50 lb. per hour under average conditions, and may be increased to 75 or more pounds under particularly favorable conditions or may have to be materially reduced in rooms where ceilings are low or where there is a large amount of machinery or belting or shafting. Each unit is equipped with an individual auto matic humidity control which operates to increase, or decrease the amount of water fed to the machine'in accordance with the conditions of the air around it. This con trol will hold the humidity condition uni The Bahnson Master Control The Bahnson Master Control has been developed to give a sensitive and accurate instrument to open or close a valve in response to changes in relative humidity of the air. Bahnson Master Controls are adjusted at the factory and the mechanism is then sealed in a glass tube case. Changes in humidity may be obtained by a regulat ing screw, whereby the humidity may be raised or lowered as much as 10 per cent either way from normal setting. . For ordinary commercial use the Master Control is set to operate on a variation of relative humidity of 1 per cent between high.and low. Where the instrument is to be used for laboratory purposes it may be set to operate on changes of relative humidity within average reading error of the ordinary sling psychrometer. The expansive element used which is of specially prepared vegetable fiber is extremely rapid in its response to changes in atmospheric humidity and has been proven to hold a constant humidity through wide variations of Temperature. The control is en tirely electrical in its action and may be located regard less of the location of the valve. Each control is a unit and is connected up with a three-wire polarised attach ment plug to a prop erly-wired- electri cal valve. Current is used only while the valve is opening or closing, and is taken from any 110 volt line through a 1 ampere fuse. 717 /