Bingo. If you have to drain a standpipe, the floors stay locked in. Also remember that if you are using a listed pressure reducing control valve (as lower floors of a high-rise), that device may be used as a check.
Steve Leyton PROTECTION DESIGN & CONSULTING -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Duross Sent: Wednesday, April 11, 2007 7:08 AM To: [email protected] Subject: RE: Check Valves on Sprinkler Control Stations One of the committee members said it was to keep water on the floor in case of shutdown or activation on another floor. Tom GRS I thought I read in a article that one of the reasons was to eliminate the chance for multiple floor flow alarms going off in case of a fire. Dewayne I stand corrected, I haven't dabbled in any high rise stuff lately. Guess that way the contractor doesn't have to shut down the floor control valves if the riser is disabled. <:| Craig L. Prahl, CET Better start reading the '07 #14. Mandatory now and I couldn't agree more. Tom Generally you have a control valve assembly of some sort on each floor so you can isolate and test each floor. Personally, I don't see any value in the check valve. Craig L. Prahl, CET Not a code requirement but is it good practice to install a check valve on floor control stations for a multi story building or high-rise etc. The intent would be for maintenance work to the riser that all of the system valves would not have to be closed and the floor systems would not be drained inadverntly. Anyone installing chack valves here or not worth the expense? Are there any other benefits? Thanks _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
