I thought I was going to be called crazy for suggesting a valve at the end of each line and then running it in PVC. It would be expensive for sure. Let me know if you are going to go that way and I will be stock in the valve suppliers.
Practically, run it in steel and call it good. Travis Mack, SET MFP Design, LLC 3356 E Vallejo Ct Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 <mailto:email:[email protected]> email:[email protected] <https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.mfpdesi gn.com%2F&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C14e5497c16da4 2e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=HJ8OA4xyeHAoxXNz5mu%2 FYfycgtd5nsFrrpvzulZiNkQ%3D&reserved=0> http://www.mfpdesign.com <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.facebo ok.com%2Fpages%2FMFP-Design-LLC%2F92218417692&data=02%7C01%7C%7C1121d49f9e6b 4cf248f108d4df580e77%7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C6363790166 77342180&sdata=H%2BwdcgK8DLGBcNoqJEvUrzsXngySwkX56Vgf9gM9EGk%3D&reserved=0> https://www.facebook.com/pages/MFP-Design-LLC/92218417692 Send large files to us via: <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.highta il.com%2Fu%2FMFPDesign&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77%7C 14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=eGdMZGu2 wXhUupGwgGTrqF3b54OP5%2BAZvlHhABSexWY%3D&reserved=0> https://www.hightail.com/u/MFPDesign LinkedIn: <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.linked in.com%2Fin%2Ftravismack&data=02%7C01%7C%7C1121d49f9e6b4cf248f108d4df580e77% 7C14e5497c16da42e69ffa77d19bafe511%7C0%7C0%7C636379016677342180&sdata=tT5E7L sZjSmyreKi4gDCa70EWN%2BZodi%2FhbeCbHNRijI%3D&reserved=0> https://www.linkedin.com/in/travismack "The bitterness of poor quality remains long after the sweetness of low price is forgotten." From: Sprinklerforum <[email protected]> On Behalf Of Matthew J Willis Sent: Friday, March 30, 2018 3:13 PM To: Forum <[email protected]> Subject: RE: PVC drain line So, The answer would be no. Right? Plastic is fine for drain, not listed. But all piping before the valve is. R/ Matt Sent from my Verizon 4G LTE Droid On Mar 30, 2018 4:10 PM, Scott Futrell <[email protected] <mailto:[email protected]> > wrote: I can't see a valve at the end of each line being practical. Then you'd need a lift to drain them when you wanted to use it and these are >25K square foot systems, so many valves. Scott Office: (763) 425-1001 x 2 Cell: (612) 759-5556 From: Sprinklerforum [mailto:[email protected]] On Behalf Of Jeff Normand Sent: Friday, March 30, 2018 5:07 PM To: [email protected] <mailto:[email protected]> Subject: Re: PVC drain line I say it's fine if you have drain valves at the end of each line and transition to pvc after the valve. But that may be expensive. So I say pvc is ok after the drain valve. But is that practical? On Fri, Mar 30, 2018 at 4:59 PM, Scott Futrell <[email protected] <mailto:[email protected]> > wrote: A Friday afternoon conundrum for the group. I have a client with corrosion issues in several wet, twenty year old, ESFR, warehouse systems. These are center-fed systems. Yes, center-fed. So all of the branchlines are dead ends. Corrosion scale and sludge is pushed into the ends of the lines. Flushing will be done. End of the day though the client wants to add a tie-in drain line connecting all the ends of all the lines to drain/flush in the future. It has been suggested that schedule 40 PVC might be used for these tie-in drains. My response so far: Practically, plastic should be okay. But, it would not be recognized in NFPA 13. Also, because it could fail in a fire, and we would expect high challenge fires in warehouses filled with combustibles like pallets and plastics, if it failed before the sprinklers operated, or before they were winning the battle you would have a potential system failure. Chances are probably remote, but they would exist with the right (wrong) conditions. I would expect that a knowledgeable inspector would question the installation at least. I wouldn't specify it, but schedule 40 PVC might be an option for what you are trying to accomplish cost-effectively. What say ye all? Scott Futrell Office: (763) 425-1001 x 2 Cell: (612) 759-5556 _______________________________________________ Sprinklerforum mailing list [email protected] <mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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