. Reliable vacuum and vacu-vapor heating equipment . PORTS in valve throughwhich steam passes to outlet, INLET for steam. A QUARTER TURN of this wheel-handlefully opens or closesthe valve. HEAVY PHOSPHORBRONZE SPRING — always maintains tightscaling of valve. BRONZE VALVE—con-trols amount of steamadmitted by partially orfully opening ports in seat COMPOSITION SEAT on which valve turns. It isI Meaning, and unaffectedby steam. The Vacu-Graduate Packless Radiator Valve Patent $ Applied -For % inch size A Vacu-Graduate Packless Valve with wheel-handle is installed on the supply end of each bottomfe
. Reliable vacuum and vacu-vapor heating equipment . PORTS in valve throughwhich steam passes to outlet, INLET for steam. A QUARTER TURN of this wheel-handlefully opens or closesthe valve. HEAVY PHOSPHORBRONZE SPRING — always maintains tightscaling of valve. BRONZE VALVE—con-trols amount of steamadmitted by partially orfully opening ports in seat COMPOSITION SEAT on which valve turns. It isI Meaning, and unaffectedby steam. The Vacu-Graduate Packless Radiator Valve Patent $ Applied -For % inch size A Vacu-Graduate Packless Valve with wheel-handle is installed on the supply end of each bottomfeed radiator or coil. While this is a quick-opening supply valve and does not have a grad-uated dial, it can also be used as a graduatingvalve. The main reason for equipping this valve Fifty-One. THE RELIABLE RETURN LINE with a wheel-handle is to eliminatedanger of breakage, as people arebound to step on these valves toreach a window shade, etc. The Vacu-Graduate Valve isself-cleaning. Thevalve always turns onthe seat, so dirt cannotaccumulate and wearseat, as is the case withthe majority of radiatorsupply valves. The seat above thevalve stem makes the Vacu-Grad-uate Valve packless, and it is 1,134 andalways held tightly in place by 1K2 inch sizesan extra large, heavy spring. The spring alsomaintains a tight seating of the valve—it cannotleak. As the sectional illustration shows, thereare no complicated ports to set or clog; no packingsto wear. The Valve operates easily at all times,and there is no chance for it to stick. The Vacu-Graduate Packless Valve is in a class byitself for durability. The body, valve and valve stem areheavy bronze. The spring is phosphor bronze. The seatsare made of a special composition, unaffected by hardwood wheel-handle is shaped to fit
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Keywords: ., bookcentury1900, bookdecade1910, bookidreliablevacu, bookyear1915
