I am always surprised at how many left handed valves there are out there. While investigating some issues with a new fire pump Installation in Charlotte, we found 3 left handed valves, 1 open, 1 half closed, and 1 3/4 plus closed. I really don't like these, especially on a gridded underground system because unless you have a very diligent inspection dept, it is way too easy to leave a valve closed. In our situation, we caught the low flow due to the fire pumper test suction dropping to +\- 10 psi @ under 500 GPM. It ended up being a secondary main feeding hydrants had been inadvertently shut down, thinking the valves were open. Since it was a secondary main, the fire pumps were fine, but the hydrants wouldn't function for fire flows. Just something to think about for all those civil engineers on here...
Jamie Seidl Sent from my iPhone > On Nov 24, 2014, at 9:13 PM, <[email protected]> wrote: > > Did you check to see if it is a left hand valve? I've run into this in the > past. > > Mark at Aero > 602 820-7894 > > Sent from my _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
