Message-
From: sprinklerforum-boun...@firesprinkler.org
[mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Todd Williams
Sent: Tuesday, June 19, 2012 7:25 PM
To: sprinklerforum@firesprinkler.org
Subject: RE: Calculating Pressure Reducing Valves
Hazen-Williams, PA
Gotta love it!
Todd
Subject: RE: Calculating Pressure Reducing Valves
Just south of Wilkes-Barre, north of Blue Ball...
Mr Leyton knows more about PA than most SoCal'ers.
Nice chuckle on a TGIF!
George L. Church, Jr., CET
Rowe Sprinkler Systems, Inc.
PO Box 407, Middleburg, PA 17842
877-324-ROWE 570-837-6335 fax
In HydraCalc you can give a fixed PSI limiter to a fire pump, it will
flat-line the curve above that PSI.
On Tue, Jun 19, 2012 at 5:54 PM, Vince Sabolik vi...@wtfp.net wrote:
I've done this a couple of times before - for GSA, no less.
Believe it or not, part of that dramatic pressure drop
Ah! Thanks Jeff, that's pretty much what I was looking for and is good in this
case where the PRV is close to the fire pump!
Thanks,
--- On Wed, 6/20/12, Jeff Garrison jeffgarrison1...@gmail.com wrote:
From: Jeff Garrison jeffgarrison1...@gmail.com
Subject: Re: Calculating Pressure Reducing
What kind of pressure reducing valve? There are fixed pressure
(control) valves and then more conventional ones that have a
differential, which will make for a discharge pressure curve, depending
on inlet pressure. SAFEST thing to do is take serial number off of
valve and contact manufacturer
I've done this a couple of times before - for GSA, no less.
Believe it or not, part of that dramatic pressure drop across that
valve IS friction loss.
The manuacturer will usually give you a loss table. In my case I
showed that loss (friction) in the appropriate
column and let the less be a
: Vince Sabolik vi...@wtfp.net
Subject: Re: Calculating Pressure Reducing Valves
To: sprinklerforum@firesprinkler.org
Date: Tuesday, June 19, 2012, 9:54 PM
I've done this a couple of times before - for GSA, no less.
Believe it or not, part of that dramatic pressure drop across that valve IS
friction
Hazen-Williams, PA
Gotta love it!
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, CT
860.535.2080
www.fpdc.com
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