Triggers an RPZ Plugs heads Need much more? Turns to glass when exposed to air, hence the sealing action. Imagine cross connection and a resident drinks it. That, my friend, is the type of negligence that pierces the corporate veil and puts you where you belong.
Not using it is a noo-brainer. George L. Church, Jr., CET Rowe Sprinkler Systems, Inc. PO Box 407, Middleburg, PA 17842 877-324-ROWE 570-837-6335 fax g...@rowesprinkler.com -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of njarendt tds.net Sent: Wednesday, October 31, 2012 3:47 PM To: sprinklerforum@firesprinkler.org Subject: Re: Sodium Silicate Several reasons Sodium silicate is a white powder that is readily soluble in water, producing an alkaline <http://en.wikipedia.org/wiki/Alkaline> solution. It is one of a number of related compounds which include sodium orthosilicate<http://en.wikipedia.org/wiki/Orthosilicate>, Na4SiO4, sodium pyrosilicate<http://en.wikipedia.org/w/index.php?title=Pyrosilicate&action=edit&redlink=1>, Na6Si2O7, and others. All are glassy <http://en.wikipedia.org/wiki/Glassy>, colourless and dissolve in water. Sodium silicate is stable in neutral <http://en.wikipedia.org/wiki/PH> and alkaline <http://en.wikipedia.org/wiki/Alkaline> solutions<http://en.wikipedia.org/wiki/Solution>. In acidic <http://en.wikipedia.org/wiki/Acidic> solutions, the silicate<http://en.wikipedia.org/wiki/Silicate>ion reacts with hydrogen ions to form silicic acid <http://en.wikipedia.org/wiki/Silicic_acid>, which when heated and roasted forms silica gel <http://en.wikipedia.org/wiki/Silica_gel>, a hard, glassy substance. The absence in the US of mandatory aging tests, whereby PFP systems are made to undergo system performance tests *after* the aging and humidity exposures, are at the root of the continued availability, in North America<http://en.wikipedia.org/wiki/North_America>, of PFP products that can become inoperable within weeks of installation. Norm On Wed, Oct 31, 2012 at 6:08 AM, tcf...@bellsouth.net <tcf...@bellsouth.net>wrote: > Stops up drops and heads. It will collect in low points also and cause > obstruction. > > Sent from my HTC EVO 4G LTE exclusively from Sprint > > ----- Reply message ----- > From: "JSM Fire Pro" <jsm...@cableone.net> > To: <sprinklerforum@firesprinkler.org> > Subject: Sodium Silicate > Date: Tue, Oct 30, 2012 11:48 PM > > > Why does NFPA 13 not permit this additive for fire sprinkler systems? > > Thanks in advance. > > J. Scott Mitchell, PE > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@firesprinkler.org > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > -------------- next part -------------- An HTML attachment was > scrubbed... > URL: < > http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attac > hments/20121031/6d0f685f/attachment.html > > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@firesprinkler.org > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > -- *If You See Something Suspicious.... Say Something! 1-866-HLS-TIPS.* Norman Arendt, CHS III, CMAS, PhD, CFEII President Infragard Madison Members Alliance Middleton Fire District Plan Reviewer and Investigator PCII and CVI Certified -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20121031/4c02f53e/attachment.html> _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
