Let's see., (2002 edt.)
14.4.1.2 "Pipe sizes shall be no less than 1" nominal for ferrous piping and
¾" nominal for copper tubing or nonmetallic piping listed for fire sprinkler
service."
As nipple is commonly associated with piping less than 12", perhaps calling
it a brass nipple is not proper.
So for fittings,
6.4.1
"Fittings used in sprinkler systems shall meet or exceed the standards in
Table 6.4.1 or be in accordance with 6.4.2 or 6.4.3"
No mention of brass. Also, fittings size is dictated by pipe size, so see
above. The only mention of ½" is in 8.14.19 under retro-fit applications.
Side note: Those still a little unsure of the "standard weight" term
applying to pipe with a certain wall thickness can see 6.4.4 as the terms
are used there describing weight class of fittings.
I would say proceed carefully...,
R/
Matt
Matthew J. Willis
Key Fire Protection Services, Inc.
2526 Deans Bridge Rd.
Augusta, GA. 30906
706-790-FIRE (3473) Voice
706-738-2119 Facsimile
706-220-3348 Cell
[email protected]
-----Original Message-----
From: Greg McGahan
Sent: Thursday, December 01, 2011 9:40 AM
To: [email protected]
Subject: Re: Sprinkler head extension nipples
Is there anything that prevents them from being used? They are not
ferrous...I don't know.
On Thu, Dec 1, 2011 at 6:01 AM, Morey, Mike <[email protected]> wrote:
Are the short brass nipples used to extend sprinkler head drops that have
been cut incorrectly legal in any application other than 13R anymore?
I've
seen some listed as 13R only and I can't find any evidence to support
their
use in any other flavor of 13? NFPA 13 2001 would be my primary concern
if
someone can point me to something supporting yes or no on using them or if
there is a product available that is appropriate for use in a 13 system.
Mike Morey, SET, CFPS
Sprinkler Designer
BMW Constructors, Inc.
O: 317.651.0596 | C: 317.586.8111
www.bmwc.com
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Greg McGahan
Living Water Fire Protection, LLC <http://www.livingwaterfp.com>
1160 McKenzie Road
Cantonment, FL 32533
850-937-1850
fax 850-937-1852
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