"22.4.4.7 (5) Do not include fitting loss for straight-through flow in a
tee or cross." Seems clear to me. It doesn't say " ... unless
manufacturers data ... ".
13D does require inclusion of loss for straight-through flow. That's why
the information is in cpvc and pex data sheets.
Trevor Spain
Igneus Incorporated
On 9/23/2011 1:55 PM, Steve Leyton wrote:
I mean to say that if you peruse the manufacturer's data sheets for
products like CPVC and PEX they require it in very clear language. I
believe that the press-type fittings do as well. Not in every case -
Jamie alluded to the fitting chart in NFPA 13 for example.
Steve Leyton
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Bob
Sent: Friday, September 23, 2011 11:45 AM
To: [email protected]
Subject: RE: "flow through tee's and Hydraulic calculations"
I either misunderstand what is being said here, or my ignorance is about
to
show through, but I have never heard anyone say that "you absolutely
have to
include" a flow through tee in calculations regardless of type. 13
22.4.4.7(5) seems clear to me that you don't include this fitting
regardless
of schedule. Am I missing something?
Thanks,
Bob Knight, CET III
208-318-3057
www.firebyknight.com
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Steve
Leyton
Sent: Friday, September 23, 2011 12:13 PM
To: [email protected]
Subject: RE: "flow through tee's and Hydraulic calculations"
Manufacturer's data sheets give the values and instruct on use - see
BlazeMaster design guide, for ex. Yes, you absolutely have to include
...
Steve Leyton
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Seidl
Jamie
D.
Sent: Friday, September 23, 2011 10:11 AM
To: [email protected]
Subject: "flow through tee's and Hydraulic calcultions"
Hello forumites, I'd like to pole the forum and see what the consensus
is on
accounting for flow through tee's or "tee on the run" when calculating a
system. NFPA states that they do not need to be included when using the
schedule 40 fitting table. But when using manufactures'
fitting equivalents, do you include them?
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