charles_kaplan
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NOTE: I believe this topic is loosely similar to 'Low yield well with cistern and jet pump', but no well, city water. As such I have some questions I am hoping someone might have a best practices answer to.
I have city water, but unfortunately the supply line is undersized. I am a 1/4 mile from the main and have probably 100' elevation difference all with a 1" line. The net result is low pressure and low volume.
About 7 years ago I installed a booster pump and 70 gallon bladder style pressure tank, setup for 40/60 out. Yes I included a backflow preventer.
It all works fine.
But when the pump is running it takes several minutes, during which time it is #1 a bit noisy and #2 I can't help but suspect it is scavenging.
Lately I have been thinking about installing a 2nd pressure tank where the low pressure water first enters the house and before it hits the boost pump. If this tank can hold more than the draw down (~30 gal) the pump will empty this tank before/in-parallel with the street water, thus cycling in seconds rather than minutes.
But then I thought, what if I am watering for hours in the yard, this 2nd tank will empty and the pump will still be running. Will the bladder in the tank be stretched the wrong way and possibly damaged?
What if rather than a 2nd pressure tank I installed a cistern with a float switch, somewhat like here, "https://terrylove.com/forums/index....lp-pumping-uphill-to-house.57314/#post-422117". The big difference is that with a cistern and city water I need a float that actually can limit the water level else the cistern would over-fill.
Is there a better approach to all of this?
I would like something concrete before I go to the plumbing inspector.
Many thank
CK
I have city water, but unfortunately the supply line is undersized. I am a 1/4 mile from the main and have probably 100' elevation difference all with a 1" line. The net result is low pressure and low volume.
About 7 years ago I installed a booster pump and 70 gallon bladder style pressure tank, setup for 40/60 out. Yes I included a backflow preventer.
It all works fine.
But when the pump is running it takes several minutes, during which time it is #1 a bit noisy and #2 I can't help but suspect it is scavenging.
Lately I have been thinking about installing a 2nd pressure tank where the low pressure water first enters the house and before it hits the boost pump. If this tank can hold more than the draw down (~30 gal) the pump will empty this tank before/in-parallel with the street water, thus cycling in seconds rather than minutes.
But then I thought, what if I am watering for hours in the yard, this 2nd tank will empty and the pump will still be running. Will the bladder in the tank be stretched the wrong way and possibly damaged?
What if rather than a 2nd pressure tank I installed a cistern with a float switch, somewhat like here, "https://terrylove.com/forums/index....lp-pumping-uphill-to-house.57314/#post-422117". The big difference is that with a cistern and city water I need a float that actually can limit the water level else the cistern would over-fill.
Is there a better approach to all of this?
I would like something concrete before I go to the plumbing inspector.
Many thank
CK