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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