The Jordan, Knauff & Company (JKC) Valve Stock Index was down 12.5 percent for 2011, well below the broader S&P 500 Index, down only 1.1 percent. The JKC Pump Stock Index was also down 19.2 percent.
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Rubber-seated ball valve replacement saves energy, money and downtime.
Millcreek Township connects to neighboring township with a pressure-reducing valve with integral backup.
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The Jordan, Knauff & Company (JKC) Valve Stock Index was down 12.5 percent for 2011, well below the broader S&P 500 Index, down only 1.1 percent. The JKC Pump Stock Index was also down 19.2 percent. Both indices kept pace with the S&P 500 during the beginning of the year and then fell behind during the last five months of 2011.
Millcreek Township connects to neighboring township with a pressure-reducing valve with integral backup.
Rubber-seated ball valve replacement saves energy, money and downtime.
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In this multi-part series, we will investigate several aspects of centrifugal pump efficiency.
First of Five Parts
Since the original publication of this draft standard in the January 2008 issue of Pumps & Systems, I have received feedback, encouragement, numerous questions and criticism. The draft listed three basic levels of repair.
The McGraw-Hill scientific dictionary [5] states that a volute is "a spiral casing for a centrifugal pump... designed so that speed will be converted to pressure."
