We have used brass nipples in the past for similar issues. On Wed, Aug 9, 2023 at 1:33 PM Eric Rieve <[email protected]> wrote:
> > > So, running with this topic a bit. Let’s say this “theoretical” new system > is a warehouse fab where some ¾” heads need to be raised up a bit for > proper distance to ceiling due to deeper than expected I-beams. The fun > question to ask is it ok to use ¾” x 6” stainless steel nipples and ¾” > stainless steel couplings to raise those heads up? The ¾” weld-o-lets > aren’t stainless, but the relevant section in NFPA 13 only mentions pipe > and not fittings. Assuming it calc’s out ok hydraulically of course. > > > > Eric Rieve > > Rieve Fire Protection > > > > *From:* Travis Mack <[email protected]> > *Sent:* Wednesday, August 9, 2023 1:53 PM > *To:* Discussion list on issues relating to automatic fire sprinklers < > [email protected]> > *Subject:* [Sprinklerforum] Re: 3/4" Nipple > > > > You ask if it is ever allowed. That answer is yes. You can use ¾” CPVC, > Copper and maybe even a few other types of pipe. Those are just the ones > that pop into my head initially. If you are talking black or galvanized > steel pipe, then no, it is not acceptable in a new system. > > > > > > Travis Mack, SET > > *M.E.P.CAD* | Instructor / Support > > 181 N. Arroyo Grande Blvd. #105 I Henderson, NV 89074 > > www.mepcad.com | *m: 480.547.9348*|* Whatspp: +14805479348* > > *Email: [email protected] <[email protected]>* > > > > *AutoSPRINK | AutoSPRINK FAB | AutoSPRINK RVT | AlarmCAD* > > > > *From:* Brian Harris <[email protected]> > *Sent:* Wednesday, August 9, 2023 10:49 AM > *To:* [email protected] > *Subject:* [Sprinklerforum] 3/4" Nipple > > > > Is it ever allowed in a *new system* to use a ¾” nipple to a 1” x ¾” > reducer, then to a 1” Sprig? I say no unless it’s a revamped system. > > > > *Brian Harris, CET* > > BVS Systems Inc. > > bvssystemsinc.com > > Phone: 704.896.9989 > > Fax: 704.896.1935 > > > > > > _________________________________________________________ > SprinklerForum mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to > [email protected] > -- Greg McGahan *Genesis Fire Services, LLC* *4912 Glover Lane. Milton, FL **32570* *P- 850-637-8535* *C- 850-712-9555*
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