The title to this thread was 'surge suppression'. If that is the water
purveyor's concern, and not contamination (air gap, BFP ), then if you
already have a soft-start fire pump controller, or a semi-soft start fire
pump controller, offer that feature in mitigation of surge supp
methods. Their first choice is an appropriately sized break tank with the pump
suction connected directly to the tank and an air gap fill line for refill.
Their second option is an appropriately sized surge suppression tank, 1000
gallon minimum capacity with calculations to substantiate the actua
suction connected directly to the tank and an air gap fill
line for refill. Their second option is an appropriately sized surge
suppression tank, 1000 gallon minimum capacity with calculations to
substantiate the actual size, and an RPZ Backflow device installed on the
suction side of the boos
break tank with the pump
suction connected directly to the tank and an air gap fill line for refill.
Their second option is an appropriately sized surge suppression tank, 1000
gallon minimum capacity with calculations to substantiate the actual size, and
an RPZ Backflow device installed on the su
Does anyone have any experience with providing pressure relief vales or surge
suppression tanks on wet sprinkler systems.
What were the conditions that warranted their installation beside NFPA 13
regarding relief valves on gridded systems and how did you go about sizing them?
Craig L. Prahl
