Nothing to break, no pitots to buy again. Much more efficient too. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Todd Williams - work Sent: Monday, August 20, 2007 6:31 PM To: [email protected] Subject: pitotless
OK, Tom. You've been pushing these pitotless nozzles. It looks like a great toy, but what justifies the $495 dollar cost? (I know, this should be on Sprinkler Chat, but it is a segue from a technical Q, so I figured it was OK.) At 06:07 PM 8/20/2007, you wrote: >I have tested many fire pumps all by my lonesome before, I prefer a helper >but in a pinch have done it alone. He should have been modulating with the >OS&Y or BV and not with those straight gates, they do walk and are not >supposed to be used for anything but full open or full closed, imho. So >he's also pressurizing the normally empty test header line and fittings too? >Big boo-boo. I'm not sure about UL having a category for "fire pump testing >devices" but I use Hosemonsters (you guys gotta get those pitot-less FM >approved nozzles, they're fantastic!) and/or digital flowmeters. My >hosemonsters have a remote reading assembly with 25', 50' and 100' tender >lines that allow me to read the pitot pressures away from the water at the >test header, on the gate of the truck or right in the Fire Pump Room. >So yes, a pump can be tested by one person. If the area is closed off and >no danger to pedestrians, easy for one sole. I rarely use 2 helpers unless >it's a real big one. I did a 2500 GPM at the local IKEA this morning with >just myself and my large baby brother, no problem. 6 lines and monsters, >remote reader and radios. Took 45 minutes and that included 3 auto and 3 >manual starts and stops of both pumps, transfer switch test and emergency >starts on both normal and emergency. I easily could have done it myself >too. > >I've got 7 more to do this week, a couple I'm doing myself. There are still >some shops in my area doing the old playpipe thing (I use them rarely) >whether under planks under the truck wheels or those playpipe trailers but >you gotta check out hosemonsters and with the new 2" nozzles, you can cut >out at least one line on most pump tests. I cringe when I see others just >blowing water down the drain for an hour, fooling with hose gates on >playpipes with the header and hose subject to full pump discharge pressure. >3 flow points take 20 minutes if you know what you are doing. BTW-I've got >2 of those hydrant testers, I doubt their accuracy. > >Tom Duross >Go Red Sox! _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
