They use water to pump water.
they arent talking about battery backups, but rather city water powered pumps. city water never goes out (or shouldnt at least) so you dont even have to be home for these pumps to work. you do have to be home if the power goes out to hookup the generator.
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they use a venturi to pull the water out of the sump. basically the city water creates a vacuum when it rushes past the suction tube at a high velocity.
picture this with water instead of air:
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it typically takes 2 gallons of city water to remove 1 gallon of sump water...so do the math before you purchase. City water isnt cheap.
for a typical volume of sump water (my pump runs every ~20 mins but removes ~12 gallons of water each cycle) at my house even when the pump takes 2 gallons to remove 1 of sump water, it will cost me ~$3.25/24 hours to run.
On the heaviest of rainy days when my pump runs every 60 seconds and removes 12 gallons of sump water the cost of city water would only be $65/ 24 hours.
not expensive for the insurance value of having one. the power usually isnt out for more than 24 hours but when it is id gladly pay the $65/ day to not have to even think about my basement flooding.
good point
I took some pictures and thought I would bring this thread back up
here's the one I had installed @ my mothers home. The pump says guardian on it. it was a very simple & clean & inexpensive installation.
I have to figure something else out. My pump runs constantly..
I have been all over the internet doing research. I pay for city water so that is not going to save me alot of money either..
I read that there is suppose to be a hole drilled in the check valve pipe (PVC)
it "burps" itself out every cycle. This is insane. I can sit here and time it.
It runs every 3 minutes..
This can't be right is it?
the water powered pump is not for primary use, backup only so it wont save you money at all. it will only allow you to sit back and not worry about power outages.
there is supposed to be a hole drilled just above the top of the pump in the discharge and under the check valve to make the water drain out after it shuts off and also to bleed the air out when it starts.
3 minutes on a dry day??? what style switch do you have on your pump and how much water is being evacuated each time? are you sure the switch is properly adjusted? are you sure your check valve is working and not letting all the water thats in the discharge drain back into the sump? 3 minutes wouldnt be out of the question if its only moving a few gallons of water each time.
here is a short vid of it in cycle, mods I know its not in the right spot but on topic
YouTube - sump pump 2 001
yes its shallowis the check valve where the pump meets the pvc discharge?
yes
that is a pretty high volume of water coming into the crock but the crock also looks really shallow.