Michael Choffin
01-27-2010, 06:43 AM
Does anyone have any historical experience with polybutylene fire protection sprinkler piping? I was looking at a garden style apartment complex where several of the buildings were piped with polybutylene sprinkler piping. The majority have CPVC, Blazamaster specifically; however, the first few buildings constructed are with the poly piping. The buildings were built in the late 1980's. Larger pipes are all that are visible and appear to have heat fused joints. All smaller pipe that connect to the individual sprinkler heads are concealed and are possibly connected with a clamping method. The site reported no history with leaks or deterioration of those piping system.
Additionally, the static pressure within the sprinkler systems are quite high. The pressure gauges at the sprinkler mains ranged from 120 PSI to has high as 150 PSI. The pipe is stamped for 100 PSI at 180F. I don't know how that translates to 50F to 70F water within the sprinkler system.
Any history or comments would appreciated.
Additionally, the static pressure within the sprinkler systems are quite high. The pressure gauges at the sprinkler mains ranged from 120 PSI to has high as 150 PSI. The pipe is stamped for 100 PSI at 180F. I don't know how that translates to 50F to 70F water within the sprinkler system.
Any history or comments would appreciated.