buickanddeere
Super Member
Can't imagine a well head, tank and pipes outside. They would be frozen and split here between October and May.
Water well experts
- Thread starter bdog
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Thanks for the replies so far.
The drillers came today and dug their mud pit. They made it 15' deep and about 6' wide and 30' long. It is a good sized hole for sure. Hopefully if the weather cooperates they will move the rig in tomorrow.
Regarding the pressure tank will they work properly with this high of flow and how large do they need to be? My house well might be 5 GPM and the pressure tank is probably 30 gallons? It is pretty good sized. Using that ratio for a 70gpm well would I need a 420 gallon pressure tank?
The drillers came today and dug their mud pit. They made it 15' deep and about 6' wide and 30' long. It is a good sized hole for sure. Hopefully if the weather cooperates they will move the rig in tomorrow.
Regarding the pressure tank will they work properly with this high of flow and how large do they need to be? My house well might be 5 GPM and the pressure tank is probably 30 gallons? It is pretty good sized. Using that ratio for a 70gpm well would I need a 420 gallon pressure tank?
TomSeller
Super Member
Right, but not in Sacramento. Amazing the differences in climate the US has.
ultrarunner
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We have all are hose bibs in copper outside and the water meters are just below grade in my part of CA...
Egon
Epic Contributor
You might want to consider pressure tank for the domestic potable water and just bypass it for the irrigation system.
At 30 gal./min. The pressure tank may be just a little bubble in the line that hasn't the volume to really do anything.
At 30 gal./min. The pressure tank may be just a little bubble in the line that hasn't the volume to really do anything.
buickanddeere
Super Member
Nobody ever installed a pressure tank that was too large on a water supply system. Properly plumbed with a minimum of bends and corners . The pressure tank will also reduce pipe work stress by absorbing water hammer. Some systems need more than one pressure tank.
jaydee325
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For those of you who like numbers, or are engineers, or just like this stuff:
Pump Laws Review and Equations - Engineers Edge
Have fun!:thumbsup:
Pump Laws Review and Equations - Engineers Edge
Have fun!:thumbsup:
flusher
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Hardly ever freezes here on the North Sacramento Valley floor. Had one freeze up--ice in the stem of the WOG valve that shuts off the water to the house, shop, landscape irrigation. Just wrapped the valve in fiberglass--problem solved.
How big is your pump and what is your desired gallons per minute flow? Your tank needs to be sized to give you a one minute draw down. In other words, if you have a 30 GPM pump your tank needs to be big enough to let out 30 gallons before the pump comes on.
It will likely be a 7.5 HP pump and we are shooting for 70 GPM. They finished drilling today at 144' and they have set 8" casing. I think the plan is to do a flow test tomorrow. Once we know what it will flow we will decide for sure on the pump size.
So you are saying if I have a 70 GPM pump I will need a 70 gallon tank?
Just to clarify I am not running my house off this well. I have a separate well for that. This one will be used to fill and maintain a pond and possibly some light irrigation.
