Electrical news and engineering . Close-up view of penstock mouth ?-imple, no milside power being required, tlie valve beingopened or closed by means of the penstock pressure. Thevalve plunger is of the diflferential type and seats against aground fit ring in the neck of the body. The annular cham-lier .\ and the central chamber B are connected through acontrol valve and piping either to the penstock pressure orto the atmosphere, .\dmitting penstock pressure to A andatmosphere to B opens the valve while the reverse operationcloses it. The achantage of a \alvo nf this type is its simplicity ofo
Electrical news and engineering . Close-up view of penstock mouth ?-imple, no milside power being required, tlie valve beingopened or closed by means of the penstock pressure. Thevalve plunger is of the diflferential type and seats against aground fit ring in the neck of the body. The annular cham-lier .\ and the central chamber B are connected through acontrol valve and piping either to the penstock pressure orto the atmosphere, .\dmitting penstock pressure to A andatmosphere to B opens the valve while the reverse operationcloses it. The achantage of a \alvo nf this type is its simplicity ofoperation. Furthermore, because of its circular section itcan be built for any head and thus located at the lower endof a penstock, obviating by this arrangement the necessity ofemptying and filling the penstock for each shut down. Turbines Five turbines are at present under contract, twoof which are completely erected. They are each of 5(1, THE IL A 1, NEWS Two Views of Finished Oueenston-Chippavva Canal. lining where natural rock surface lus water level
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidelectricalnewsen31donm
