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' ' Job Numb�:Caic.Aroa Nl <br /> Pf: Pressure loss due to friction between points <br /> Pe: Pressure due to elevation difference between indicated points <br /> Pv: Velocity pressure at a point in a pipe <br /> ��1997-2004,M.E.P.CAD,Inc. 12/1ZJQ4 16:38:28 Page i i <br />