I had the IPC open and was curious. Which Code are they referencing? I don't see AWWA anywhere in IPC section. IPC 605.3 allows all the below pipes. I find it hard to believe NPC or AWWA are really that much different. The below choices don't get you where you want to go?
Acrylonitrile butadiene styrene (ABS) plastic pipe Asbestos-cement pipe Brass pipe Chlorinated polyvinyl chloride (CPVC) plastic pipe Copper or copper-alloy pipe Copper or copper-alloy tubing (Type K, WK, L, WL, M or WM) Cross-linked polyethylene (PEX) plastic pipe and tubing Cross-linked polyethylene/aluminum/cross-linked polyethylene (PEX-AL-PEX) pipe Cross-linked polyethylene/aluminum/high-density polyethylene (PEX-AL-HDPE) Ductile iron water pipe Galvanized steel pipe Polyethylene (PE) plastic pipe Polyethylene (PE) plastic tubing Polyethylene/aluminum/polethylene (PE-AL-PE) pipe Polyethylene of raised temperature (PE-RT) plastic tubing Polypropylene (PP) plastic pipe or tubing Polyvinyl chloride (PVC) plastic pipe Stainless steel pipe (Type 304/304L) Stainless steel pipe (Type 316/316L) And your fittings are: Acrylonitrile butadiene styrene (ABS) plastic Cast-iron Chlorinated polyvinyl chloride (CPVC) plastic Copper or copper alloy Cross-linked polyethylene/aluminum/high-density polyethylene (PEX-AL-HDPE) Fittings for cross-linked polyethylene (PEX) plastic tubing Fittings for polyethylene of raised temperature (PE-RT) plastic tubing Gray iron and ductile iron Insert fittings for polyethylene/aluminum/polyethylene (PE-AL-PE) and cross-linked polyethylene/aluminum/cross-linked polyethylene (PEX-AL-PEX) Malleable iron Metal (brass) insert fittings for polyethylene/aluminum/polyethylene (PE-AL-PE) and cross-linked polyethylene/aluminum/cross-linked polyethylene (PEX-AL-PEX) Polyethylene (PE) plastic pipe Polypropylene (PP) plastic pipe or tubing Polyvinyl chloride (PVC) plastic Stainless steel (Type 304/304L) Stainless steel (Type 316/316L) Steel (ASME B16.9; ASME B16.11; ASME B16.28) Chris Cahill, PE* Associate Fire Protection Engineer Burns & McDonnell Phone: 952.656.3652 Fax: 952.229.2923 [email protected] www.burnsmcd.com *Registered in: MN Proud to be #14 on FORTUNE's 2014 List of 100 Best Companies to Work For -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Richard Mote Sent: Wednesday, April 02, 2014 3:03 PM To: [email protected] Subject: RE: Flange x Groove Reducing Adapter I've done it for years as well, but the National Plumbing Code prohibits the use of any pipe or fitting that is not AWWA approved upstream of the backflow, and the AHJ is enforcing it. Neither black nor galvanized steel pipe is AWWA approved. We have had to buy cement lined 90° and tee's in the past to comply. Richard L. Mote Rowe Sprinkler Systems, Inc. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mike Hairfield Sent: Wednesday, April 02, 2014 3:39 PM To: [email protected] Subject: RE: Flange x Groove Reducing Adapter Use a 6" steel blind flange and have your shop cut a hole and weld a 4" PEx Gr piece of pipe in it to the length you need, this has been done for years. Mike > Date: Wed, 2 Apr 2014 12:29:15 -0700 > Subject: Re: Flange x Groove Reducing Adapter > From: [email protected] > To: [email protected] > > How about a 6"x4" concentric grooved reducer with a 6" split grooved flange? > > > On Wed, Apr 2, 2014 at 12:11 PM, Richard Mote > <[email protected]>wrote: > > > Anyone know if there is a listed Flange x Groove Reducing Adapter on > > the market, I just spent 30 min. searching the web but no joy. I'm > > looking to go from a 6" flange directly to a 4" groove inlet on a > > backflow, space is the driving factor. > > > > Richard L. Mote > > Rowe Sprinkler Systems, Inc. > > 7994 Route 522, Suite 1 > > PO Box 407 > > Middleburg, PA 17842 > > P 570-837-7647 > > F 570-837-6335 > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprin > > kler.org > > > > > > -- > Juan Munguia > Thorpe Design Inc. > P 925.634.5758 > C 209-380-0599 > F 925.634.5975 > E [email protected] > W www.thorpedesign.com > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
