Dear All, For one floor of a highrise tower, there is normally one supervisory valve for the sprinklers of that floor.
Traditionally a supervisory gate valve is used but an UL/FM supervisory butterfly valve is also manufactured at a cheaper price. Does NFPA regulate to use which type of valve must be used? Pros and con of each type? Regards, Le Vu Phong Mobile: +84 (0) 902 363 525 phong_indochineengineering _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
