. Canadian foundryman (1921). the air hose without the aircoming in contact at any time with thevalve seat—ground joint—which is theouter wall of the plug as indicated bythe letter C on the drawing. The longarrow shows the direction of the airin its travel through the wide unob-structed air passage of the valve, whichis free from any angle turns to impedeits progress. The short arrow indicatesthe point on the large end of the plugwhere the air pressure is constantlyforcing the taper plug against the wallsof the valve body forming a perfectseat. The valve is provided with a uniquewaste arrangem
. Canadian foundryman (1921). the air hose without the aircoming in contact at any time with thevalve seat—ground joint—which is theouter wall of the plug as indicated bythe letter C on the drawing. The longarrow shows the direction of the airin its travel through the wide unob-structed air passage of the valve, whichis free from any angle turns to impedeits progress. The short arrow indicatesthe point on the large end of the plugwhere the air pressure is constantlyforcing the taper plug against the wallsof the valve body forming a perfectseat. The valve is provided with a uniquewaste arrangement to allow the accumu-lated pressure in the air hose to escapeto atmosphere when the valve is shut offas shown by air ports A and B onthe drawing; this is to safeguard theoperator, who, when disconnecting thehose from valve often receives a gush ofair in the face and accidentally getsscale or grit in his eyes. The new valve has been subjected to Air Pressurealways on thelarge end ofthe TaperPlug, holdingit firmly onSeat. Ground Joint or Seat the fulllength of theTaper Plug Valve may be shut off by turning Handleeither way around. When shut, the Air-port A registers with Supply ChamberB, allowing air trapped in hose toescape to atmosphere PRESSURE OF THE AIR RETAINS THE CLOSE SEATINGOF THIS VALVE ne, 1921
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfoundri, bookyear1921
