Well Priming

[Zerk]

What's going on here is different than that, he's not pulling the water up, he's pushing it. The pump up top pushes water down and grabs more via the Venturi effect which also gets pushed back up the well by the water being pushed down. It's a cumbersome and inefficient way to do this but, it does work.

I didn't read the full article but the diagram here is accurate so I'm guessing the information is as well - Two Line Jet Pumps for Water Wells: Installation & Repair - What is a two-line jet pump? What do the two pipes do? How does a jet pump work?

Isn't that a similar idea to what I said about two pipe wells, with a Y that creates a venture?

 

[dickfoster]

What's going on here is different than that, he's not pulling the water up, he's pushing it. The pump up top pushes water down and grabs more via the Venturi effect which also gets pushed back up the well by the water being pushed down. It's a cumbersome and inefficient way to do this but, it does work.

I didn't read the full article but the diagram here is accurate so I'm guessing the information is as well - Two Line Jet Pumps for Water Wells: Installation & Repair - What is a two-line jet pump? What do the two pipes do? How does a jet pump work?

Even then, I think you're still limited to about one atmosphere of lift. A turbine down in the hole is likely the best bet.

 

[dickfoster]

What's going on here is different than that, he's not pulling the water up, he's pushing it. The pump up top pushes water down and grabs more via the Venturi effect which also gets pushed back up the well by the water being pushed down. It's a cumbersome and inefficient way to do this but, it does work.

I didn't read the full article but the diagram here is accurate so I'm guessing the information is as well - Two Line Jet Pumps for Water Wells: Installation & Repair - What is a two-line jet pump? What do the two pipes do? How does a jet pump work?

Even then, I think you're still limited to about one atmosphere of lift. A turbine down in the hole is likely the best bet. You need to have a positive displacement pump of some sort to gain a lot of lift.

 

[turnkey4099]

I think they put the room next to the house so they well could be drilled. Also you would not want it in the basement if you ever had to pull up the pipe. It was a pretty smart idea, but they should have put a door on.

It may have been a matter of darn, I am tired of swinging this sledge hammer big enough for now.


Is there a hatch at the top where you can lower a ladder, if the room is big enough?

Normal. insstallation is well outside, tank, etc. inside. There is no reason at all on God's green earth why the tank and associated wiring, switches, etc. needs to be next to the well.

 

[turnkey4099]

I think the limit is one atmosphere or one bar and is why they had to pump mines in lifts of 30' or so.

That is for a shallow well pump (one pipe), jet pumps go much lower.

Harry K

 

[turnkey4099]

I learned something in this thread (I hate learning new stuff at my age!). Jet pumps are only good tdo about 80'. I thought they could go a lot lower.

Harry K

 

[STx]

Isn't that a similar idea to what I said about two pipe wells, with a Y that creates a venture?

Yes, but not in the way you were describing it. The key difference being that what I posted, although it does have a suction side, isn't really lifting the water at all, it's pushing it. You'll never be able to lift water more than the the 33.9' that gravity will allow.

 

[STx]

Even then, I think you're still limited to about one atmosphere of lift. A turbine down in the hole is likely the best bet.

The 2 pipe design will move water to the surface from deeper than 33.9' but, it isn't lifting it. That's the key point, it is pushing the water down and back up, not pulling it up.

Like I said, it's a really inefficient design but it does allow surface mounted pumps to move water from deeper wells to the surface.

 

[Zerk]

Normal. insstallation is well outside, tank, etc. inside. There is no reason at all on God's green earth why the tank and associated wiring, switches, etc. needs to be next to the well.

First we need get our terms correct. Is the well in that outside room, the hole going down, or just the pump. I can't imagine why would have built the room, with access to the surface, if the well wasn't in it.

If you read the post you quoted, I said well and drilled from the outside.

 

[Qapla]

A deep well jet pump is not limited to 39' .... a deep well jet pump can reliably handle a well several hundred feet deep some of them have two or more impellers and are called multistage pumps. They have a double drop pipe and use a foot valve at the bottom of the drop pipe not a check at the top.

As for "no reason at all on God's green earth why the tank and associated wiring, switches, etc. needs to be next to the well" - it may not actually "need" to be next to the well but it is a common practice here in Florida to place everything right at the well .... but then, we don't usually have to worry about freezing.

Our well is 400' from our house and 600' from my brother's house. We have 1,000' of mainline. It would not be practical to have the switch, pressure tank, etc. at either house - it is at the well, right next to it .... though, since it is in heavy shade, there is no "green earth" to speak of in that location.