Sorry, I am looking at the wrong equation. That equation just ensures I have 20 psi available at 159 percent.
On Wednesday, May 18, 2016, <[email protected]> wrote: > What are you supplying with your pump? > > > > I’m not seeing any correlation between a flow at 20 psi and sizing a > pump. What flow are you talking about, a municipal flow rate or what? > > > > If for sprinkler systems, you size the pump based on the characteristics > of the water supply and the system demands. > > > > There are ways to get an estimate on pump size but the final selection > better be verified through hydraulic calculations. > > > > > *Craig L. Prahl* > Fire Protection Group Lead/SME > *CH2M* > 200 Verdae Blvd. > Greenville, SC 29607 > Direct - 864.920.7540 > > Fax - 864.920.7129 > > CH2MHILL Extension 77540 > [email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');> > > > > *From:* Sprinklerforum [mailto: > [email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>] > *On Behalf Of *Zachary Siegrist > *Sent:* Wednesday, May 18, 2016 3:23 PM > *To:* [email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');> > *Subject:* Equation for sizing fire pump > > > > Is there an equation to specify an appropriate pressure when sizing a fire > pump? For example, when sizing gpm, I've always taken the GPM available at > 20 psi divided by 1.5 to give me the maximum GPM rating of the pump. I'm > inquiring to see if such a formula is available to size the pressure > correctly. Can anyone help? > > > > Zach Siegrist >
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