Regulator needed if 117 psi static?
I measured water pressure and flow rate in my basement. The line coming into the basement is 3/4" copper.
The measurements were made from a hose bib located just after the main shutoff. Hose bib is tee'd to the 3/4" line via a short 1/2" copper nipple.
I measured 117 psi with no water running. Then I measured 13 gpm out of the hose bib with a 7' section of 7/16" inside diameter rubber hose attached.
I have two questions...
Since the hose bib and hose is smaller than the 3/4" copper pipe, should I expect a flow rate of 13 gpm when I tee directly into the 3/4" line or will it be higher?
Do I need to install a pressure reducing valve for the sprinkler system to drop it something around 80 psi? Also read there is "straight valve with cross handle" that serves to reduce pressure. Is that something to try? It would seem the downside is that it reduces pressure but doesn't regulate.
Thanks for the help.
Frank
This post has been edited 2 times, last edit by "Frankpc" (Jul 6th 2009, 7:17pm)