I emailed and received order info on the remaining original pump. I emailed the factory back and asked if three were ordered at once and what the sizes were. I have no idea what the demand is Todd, maybe I should refer you to take a look on that end. I do know it was a refrigerated warehouse when the order was placed in 1971. I just boggles me that, assuming they were all the same, one replacement was ordered so small. Two 2500@125 and one 2000@65. Not even 2000@125, 2000@65. Scott, my thinking (and it's just me) would be to progress from small to large like with jockeys when in duplex/triplex fashion. The automatic pressure controls will be difficult either way so maybe sync the baby for lag 2 seeing yard pressures will probably be down 75-100 PSI at that point. I doesn't appear much has been done here in 10 years and it's an FM job which is surprising. I do have some thoughts about PLD and possibly a lower pressure on the replacement for the remaining original but can't make a move until someone smarter than me looks at what's on the other end of that 150 PSI yard main and huge building full of paper. I've also reached out to the local shop who replaced 2 of them but not getting much response. I'll keep the list updated. TD
I'll ask another question. How many and what size pumps are required to meet the sprinkler demand? Todd G Williams, PE > On Mar 6, 2014, at 10:08 PM, Brad Casterline <[email protected]> wrote: > > It occurs to me you are looking for answers not questions-- I'll run > back up to the nosebleed section now and just spectate > >> On Mar 6, 2014, at 8:41 PM, Brad Casterline <[email protected]> wrote: >> >> Shouldn't the order of operation be farthest from tank, middle, closest to tank? Especially if farthest is weakest? >> >>> On Mar 6, 2014, at 8:30 PM, "J. Scott Mitchell, PE" <[email protected]> wrote: >>> >>> 100% guess, but the first two may be intended to support the fire sprinkler system in the building with the third one coming on late in a bad game to support hose streams. >>> >>> Just a thought. >>> >>> J. Scott Mitchell, PE >>> >>> >>> Sent from my Verizon Wireless 4G LTE smartphone >>> _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
