Trick question huh? Some would argue reversing the FDC check, and flowing there from..
R/ Matt Matthew J. Willis Living Water Fire Protection, LLC. 1160 McKenzie Rd. PO Box 877 Cantonment, FL. 32533 850-937-1850 Voice 850-937-1852 Facsimile [EMAIL PROTECTED] ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of Fletcher, Ron ----- >Sent: Friday, May 30, 2008 10:47 AM ----- >To: [email protected] ----- >Subject: RE: 200 psi test for components rated 175 ----- > ----- >six ----- > ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of Gregg Key ----- >Sent: Friday, May 30, 2008 8:37 AM ----- >To: [email protected] ----- >Subject: Re: 200 psi test for components rated 175 ----- > ----- >Speaking of such test, How many systems are installed ----- >with a means to test the backflow at the required ----- >forward flow rate? like a wall hydrant? ----- > ----- >Thom McMahon wrote: ----- >> Don't forget the derided full forward flow test! ----- >> ----- >> -----Original Message----- ----- >> From: [EMAIL PROTECTED] ----- >> [mailto:[EMAIL PROTECTED] On ----- >Behalf Of Steve ----- >> Leyton ----- >> Sent: Friday, May 30, 2008 8:42 AM ----- >> To: [email protected] ----- >> Subject: RE: Re[2]: 200 psi test for components rated 175 ----- >> ----- >> So it's contractual, not philosophical. Presumably, ----- >the installing ----- >> contractor tests it ... ----- >> ----- >> I don't think we're talking about testing the backflow ----- >appliances ----- >> itself for functionality - that's best left for the "certified ----- >backflow ----- >> technician." If you pump up an UG including the BFP, ----- >the relief ----- >valve ----- >> will only operate when there's a differential between ----- >the clappers. ----- >> So an RPZ or RPDA usually weeps a bit when you pump it ----- >up, but once ----- >> the line is equalized you can run a conventional ----- >hydro. And if you ----- >> just want to test against it, you can pump up through ----- >the FDC or main ----- >> drain or the supply-side tap on the riser check, if so ----- >equipped. ----- >> ----- >> Steve Leyton ----- >> Protection Design & Consulting ----- >> ----- >> ----- >> -----Original Message----- ----- >> From: [EMAIL PROTECTED] ----- >> [mailto:[EMAIL PROTECTED] On ----- >Behalf Of Coastal ----- >> Sent: Thursday, May 29, 2008 7:10 PM ----- >> To: Steve Leyton ----- >> Subject: Re[2]: 200 psi test for components rated 175 ----- >> ----- >> Hello Steve, ----- >> ----- >> I start 1' AFF with my work. I sub out any underground ----- >installation ----- >> work I get (which I try to avoid) and it is up to them ----- >to test it. ----- >> Only question I have is how do you get an RPZ to hold the back ----- >> pressure to hydro to it? Pump the system up through ----- >the #1 test cock? ----- >> ----- >> -- ----- >> Best regards, ----- >> Charles Thurston ----- >> Coastal ----- >mailto:[EMAIL PROTECTED] ----- >> ----- >> Thursday, May 29, 2008, 6:55:37 PM, you wrote: ----- >> ----- >>> I'll bite - why not? If the Fire Department pumps ----- >into the FDC, ----- >> isn't ----- >>> it likely to back pressure the BFP to at least 150? ----- >And if so, ----- >> wouldn't ----- >>> it be prudent to test the assembly? ----- >> ----- >>> Steve Leyton ----- >>> Protection Design & Consulting ----- >> ----- >> ----- >>> -----Original Message----- ----- >>> From: [EMAIL PROTECTED] ----- >>> [mailto:[EMAIL PROTECTED] On ----- >Behalf Of ----- >>> Charles Thurston ----- >>> Sent: Thursday, May 29, 2008 3:30 PM ----- >>> To: IPA ----- >>> Subject: Re: 200 psi test for components rated 175 ----- >> ----- >>> Hello IPA, ----- >> ----- >>> I for one have never put 200 on the backflow, I will ----- >not either. ----- >> ----- >>> Thursday, May 29, 2008, 6:03:25 PM, you wrote: ----- >> ----- >>>> I've got this question posed to me: ----- >> ----- >>>> Backflow preventor is rated at 175 (as are most of the fire ----- >>>> sprinkler ----- >>>> components) yet we are required to do a 200 psi ----- >test. Is the keyword ----- >>> here ----- >>>> "working pressure" of 175 psi or am I missing something? ----- >> ----- >>>> thx, ----- >>>> _______________________________________________ ----- >>>> 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) ----- >> ----- >> ----- >> ----- >> _______________________________________________ ----- >> 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) ----- >> _______________________________________________ ----- >> 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) ----- >> ----- >> _______________________________________________ ----- >> 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) ----- >> ----- >> ----- >_______________________________________________ ----- >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) _______________________________________________ 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)
