Thank you to everybody for their suggestions and ideas. We usually set the flow switch for 90 seconds for just a scenario. In this case however, the flow switch may be set for 60 seconds. We have also looked into seeing if we can put a gauge on each side of the backflow and then set a pressure...
I have a situation I have recently encountered regarding the sprinkling of elevator equipment rooms above the highest occupiable floor for NFPA 13 systems. It has always been conjecture, at least in the sprinkler industry in Florida, that elevator equipment rooms above the highest occupiable...
...I have a unique situation in an apartment building that my company sprinkled. Every so often the flow switch paddle "trips" sending a false signal to the alarm bell. After discovering that this happened without a leak, a blowout, or a sprinkler head going off we elected to replace the flow...
We indeed do have a pump and as such only a manual wet standpipe would work w/o a pump since you could consider the pumper on the fire truck as a pump that would hook onto the FDC. Having an RPZ would only knock off about 7-8 PSI from the safety margin so it shouldn't be a problem. This has been...
We proposed a dry manual standpipe but the A.H.J. came back and wants only a wet automatic standpipe. It seems as though every possible solution gets shot down. I'am thinking about using an antifreeze loop in the standpipe since the standpipe is only a hose valve standpipe and is not used as a...
Thanks for the reply's so far everybody! I failed to mention that this is for a standpipe ONLY in an open stairwell. That is what is making this so hard. Thanks and keep em' coming'.
....I have a bit of a dilema here. I work for a fire sprinkler contractor and we are having to provide some sort of heat conductive properties to the fire sprinkler system to prevent freezing. We proposed using armaflex insulation but that was rejected by the A.H.J. We are having to use some...
