Ron, fortunately there is never water running through our sensing lines so there is never a chance that such build-up could ever occur in sensing lines.
Garth a fitter ----- Original Message ----- From: "Ron Greenman" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, July 14, 2007 6:40 PM Subject: Re: Why brass, copper or stainless steel, in Pressure Sensing Lines? > Aydin, > > Sensing lines are always small diameter. Brass, copper & stainless > steel are not subject to corrosion beyond the thin protective layer of > oxidized material that is insignificant relative to the diameter of > the tubing. Galvanized steel, particularly when subject to a damp, > enclosed environment, exhibits all kinds of crazy organic and > inorganic reactions. Have you ever seen a piece of 1/2" water line so > full of scale that you'd be hard pressed to force a 12 gauge wire down > the little hole left in the center? Don't want sensing lines that look > like that. > > On 7/14/07, Aydın ÖZKAYA <[EMAIL PROTECTED]> wrote: > > 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 > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > > (Put the word unsubscribe in the subject field) > > > > > -- > Ron Greenman > at home.... > ---------------------------------------------------------------------------- ---- > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
