Here's what I found (NFPA 13 2013): 6.1.1.5 - isn't required to be listed, only approved. 6.7.1.3 - not required to be a listed indicating valve. 6.7.1.2 - not required to be 'slow-close'. 6.7.3 - must be 'approved'
So, being mostly design only, I don't have direct access to net pricing. But if the above is correct, and if a 4" non-listed, non-slow-close valve cost less than the typical listed 4" butterfly valve, I can't see why a contractor can't consider using something similar to Nibco GD-4765 (http://www.nibco.com/Valves/Butterfly-Valves/Ductile-Iron-Butterfly-Valves/ GD-4765-Butterfly-Valve-Ductile-Iron-Grooved-300-PSI/). Anybody see it differently? Any contractors want to price out the two different types of valves and post the info? Ed Kramer Lawrence, KS ** Next questions: does it have to be 'listed' or just 'approved'? Does it have to be 'slow-close'? Ed Kramer Lawrence, KS ** No. The building code requires, "All valves controlling the water supply ... " for automatic sprinkler systems, pumps, tanks, etc. be supervised. A test valve is not a fire protection water supply control valve. Steve Leyton ** Without going back through the rest of the mile long thread....... IF there is a control valve in the normally closed position for Full Forward Flow Testing, is it REQUIRED to be monitored? Thanks, -- Greg McGahan Living Water Fire Protection, LLC <http://www.livingwaterfp.com> 1160 McKenzie Road Cantonment, FL 32533 850-937-1850 fax 850-937-1852 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
