90/72/1350 would be my literal interpretation. I have plotted the 10% reduced pressure on a 1.85 to arrive at a flow in the past. just wait for the coming storm of "reducing to the lowest hydraulic gradient"
On Wed, Aug 8, 2018 at 5:04 PM MFP Design, LLC <[email protected]> wrote: > Lets assume a flow test of 100 static, 80 residual, 1500 gpm flow. You > are required to reduce it by 10%. Is the reduced flow test 90 / 70 / 1500 > or 90/72/1500? > > > > I’ve always done it the first way because that keeps parallel lines. > However, I’ve run into more than a few people doing it the 2nd way > lately. Doing that has differing slopes and the lines would intersect. > The theoretical reduction could actually have a higher pressure at a given > flow with #2 since it is a flatter curve. > > > > [image: MFP_logo_F] > > Travis Mack, SET > > MFP Design, LLC > > 3356 E Vallejo Ct > > Gilbert, AZ 85298 > > 480-505-9271 > > fax: 866-430-6107 > > email:[email protected] > > > > http://www.mfpdesign.com > <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.mfpdesign.com%2F&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=HJ8OA4xyeHAoxXNz5mu%2FYfycgtd5nsFrrpvzulZiNkQ%3D&reserved=0> > > https://www.facebook.com/pages/MFP-Design-LLC/92218417692 > <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.facebook.com%2Fpages%2FMFP-Design-LLC%2F92218417692&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=H%2BwdcgK8DLGBcNoqJEvUrzsXngySwkX56Vgf9gM9EGk%3D&reserved=0> > > Send large files to us via: https://www.hightail.com/u/MFPDesign > <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.hightail.com%2Fu%2FMFPDesign&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=eGdMZGu2wXhUupGwgGTrqF3b54OP5%2BAZvlHhABSexWY%3D&reserved=0> > > LinkedIn: https://www.linkedin.com/in/travismack > <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.linkedin.com%2Fin%2Ftravismack&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=tT5E7LsZjSmyreKi4gDCa70EWN%2BZodi%2FhbeCbHNRijI%3D&reserved=0> > > > > *“**The bitterness of poor quality remains long after the sweetness of > low price is forgotten.**”* > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > -- \ \ (o> -- If life were easy... \ \_/ /) It'd be called your mom... \_/_) _|_
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