Aydin,
I've heard of a case where Galv. pipe was used for the sensing lines for the
fire pump as you are referring to with disastrous results. The galv. flaking
inside broke off and clogged the mercoid pressure switch thus preventing the
pump from operating.
I would recommend you stick with the brass, copper or stainless steel as
noted in the book.
Regards,
Gus Olson
GoCad, LLC
----- Original Message -----
From: "Aydın ÖZKAYA" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Saturday, July 14, 2007 1:53 PM
Subject: Why brass, copper or stainless steel, in Pressure Sensing Lines?
Dear All,
I wonder why, "brass, cooper or stainless steel" piping (but not galvanized
steel for instance) is specified for pressure sensing line for Fire Pump
Controls in NFPA 20 7-.5.2 & 9-5.2.
What is the rationality behind the "brass, copper or stainless steel"
limitation?
Thanks in advance...
Kind Rgds.
Aydın ÖZKAYA
KARİNA Design, Consultancy and Training Services Ltd.Co.
www.karina.gen.tr
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