twigpig
New Member
I designed and installed a fire sprinkler system in the house I am building. The fire system has three CPVC legs. Each leg ends at a toilet so every time we flush it puts fresh water in the system. I had planned on using pressure tanks to supply the system since I'm on a well. However, I have recently found out that the volume of a pressure tank is not the working (drawdown volume). I need about 210 gallons of drawdown volume. Is this reasonably possible? I wanted to avoid a storage tank with an auxillary pump. I want the system to work at least a little while without electricity. Plus with all of the drawdowns for the toilet flushing I don't think an auxillary pump will work out for me.
The way I arrived at 210 gallons: The sprinkler heads use 14 gpm each. Code requires that I have enough water to run two sprinkler heads for 10 minutes. The well pump is 7 gpm. 280 gallons minus 70 gallons is 210. I know the well pump doesn't turn on right away but this will get me close.
The fire sprinkler system is not required in my area. But my neighbor's house burned down several years ago and I have been on several fire departments over the years. If one goes in it has to meet code.
Also, thanks for this forum. I also installed the dwv and Rehau pex systems with the help of this forum.
The way I arrived at 210 gallons: The sprinkler heads use 14 gpm each. Code requires that I have enough water to run two sprinkler heads for 10 minutes. The well pump is 7 gpm. 280 gallons minus 70 gallons is 210. I know the well pump doesn't turn on right away but this will get me close.
The fire sprinkler system is not required in my area. But my neighbor's house burned down several years ago and I have been on several fire departments over the years. If one goes in it has to meet code.
Also, thanks for this forum. I also installed the dwv and Rehau pex systems with the help of this forum.