I trust y'all understand I type tongue in cheek, and this was intended to be
an opening of discussion with the AHJ.

I'd hope he'd be glad you spotted the impact and are correcting the
unforeseen losses. Not everyone would.

glc

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of John Drucker
Sent: Wednesday, April 25, 2007 2:44 PM
To: [email protected]
Subject: RE: 1/2" thread - 8 K sprinklers

Exactly correct. 

John Drucker
Fire Protection Subcode Official (AHJ)
Red Bank, NJ 

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Roland
Huggins
Sent: Wednesday, April 25, 2007 1:14 PM
To: [email protected]
Subject: Re: 1/2" thread - 8 K sprinklers

George is practicing skating on some mighty thin ice.  The problem would
be that it isn't an existing system until AFTER it is accepted.

This requirement has been in the standard a long time so whatever the
basis, it is lost as ancient history. A reasonable assumption (since it
is allowed for existing systems, thus must still work) is that the
1/2 NPT unnecessary restricts the flexibility of a system that already
has a higher flow demand than typically provided by K 5.6.

Roland

On Apr 25, 2007, at 9:38 AM, George Church wrote:

> I wouldn't see the harm in asking.
> You could also go inand install the k5.6 heads, re-run the calcs, and 
> then retro the 1/2 K8 heads in accordance with the code into what is 
> now an "existing" system.
> glc
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Greg 
> McGahan
> Sent: Wednesday, April 25, 2007 12:20 PM
> To: [email protected]
> Subject: 1/2" thread - 8 K sprinklers
>
> NFPA 13 clearly states that we can not use 8.0 k heads with 1/2"  
> threads in
> new installations. I assume there are reasons for this but I do not 
> know them.
>

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