Actually it's not "Out Dated" just modified by the water purveyor requirements for Backflow prevention. If your system has only a double check BFP then most, (NOT ALL) water purveyors will not let you put additives in the pipe. If you system has an RPZ BFP then you can put anything you like in the pipe. I've always been interested if the MIC guys change the BFP to an RPZ before they treat the system for MIC. Obviously they put in additives in the system which is connected to the water purveyors system. Do they recalc. the systems too, for the additional friction loss?
Thom McMahon, SET Firetech, Inc. 2560 Copper Ridge Dr P.O. Box 882136 Steamboat Springs, CO 80488 Tel: 970-879-7952 Fax: 970-879-7926 Subject: Re: Dry Pipe System Dilemmas The anti-freeze is a good idea but one that is outdated. Water purveyors do not permit additives in sprinkler systems. Forest Wilson _______________________________________________ Sprinklerforum mailing list http://lists.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)
