NFPA 25 Fire Pump Churn Test - SimplexGrinnell Philadelphia

[@charleswilson9952]

Fire pumps are sized for what ever pressure is required to reach the roof, 65 old school, 100 PSI current. The churn pressure is the result of what ever it takes to get there, depending on how high the building is. Use PCVs on the lower floors. Dropping pressure too fast on the sensing line test connection at 0:28 does not confirm the start setting on the controller. The test connection should be in the middle of the controller, then people would not have to get on their knees to start it.

[@ராஜாவேல்சாமி]

what is the purpose of churn test? why we want to do this?

[@konaaan1]

pump is not very clear in this video

[@SS-wo8fl]

kzbin.info/www/bejne/l5PJeqV9p6tofZI

[@EnforcementDronEd209]

What a joke!

[@Nosobchannel]

nosob company