In theory the FDC negates this good idea of pressure vs. concentration. In reality FDC aren't used but we live in the theoretical world far, far too often.
Chris Cahill -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Thom Sent: Wednesday, September 22, 2010 6:45 PM To: [email protected] Subject: RE: Anti Freeze for commercial Rod: It very well turn out that glycol 70/30 works fine at say 45-50Psi and you can only use 50/50 when pressure is over 60Psi or something like that. The same with glycerine. The is a starting end head pressure part of this story that needs to be worked out, not just the concentration. If 50/50 will work under all pressures up to 175, What will work at pressures less than 110 or 60???? I think there needs to be a lot more study, before we get anywhere near the "Definative" answer we need to not feel EXPOSED! -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Rod DiBona Sent: Wednesday, September 22, 2010 5:00 PM To: [email protected] Subject: RE: Anti Freeze for commercial I hear ya George. I am sure that I will learn more next week in Rhode Island. Yet another reason to go to every convention. Truth is that we commonly mix glycol 70/30 out here and Marty tells me for over 30 years with no reported problem. I look forward to hearing and seeing the facts. At the end of the day we will get through it and I do have confidence that the right decision will be made. Just wondered if we knew with reasonable certainty that the antifreeze was the cause. Questioning why we haven't seen these in the past; or if we had, was there a different diagnosis? Read the report from FSI. Interesting and well done but I have some questions. Maybe they get answered next week! See you down there. Rod DiBona Rapid Fire _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
