Water Well Types

There are a number of different water well types that are common throughout the country. We will discuss the more common ones. A well can vary in diameter from 1 1/4" to over 4'. We can adapt to all of them except a 1-1/4". The smallest is usually a well installation using a Sand Point that is driven into the ground. These, and all other types of wells including a 2" sand point will work with our pumps. The well types are listed below. Where special considerations are needed they will be discussed.

A Note on Well Diameters.
Occasionally we get customers that order a well seal from us and then return it for a smaller size. It is important to note that well casings are measured on the inside diameter. Just like any plumbing pipe. It is the same for PVC and steel casing. You will have to remove your well seal to get an accurate measurement.To make things more confusing, there are half sizes found in older wells such as 5.5", 6.5", and even 7.5". We don't stock these off sizes but we can help you to adapt if you let us know your situation.


 


well seal options with bracket

New 2 inch seal

2″ Well. Drilled or Sand Point.

A 2" well is the simplest to install in because it will only accept one pump. All of our pumps will normally fit just fine whether you have a PVC casing or a steel casing. The image our 2" well cap. It will work with either threaded or unthreaded casings. It is available  HERE.

What To Watch Out For...And How to Correct it.
A 2" casing is normally 2.05" inside diameter.  Our pump is 1.66" in diameter If you are using our threaded rod with 1" extension pipe and 1.95" if you are using our pipe adapter with 1-1/4" pipe extensions.  So there should be enough room to lower our assembly into the well.
If you have an older 2" well with a steel casing there can be a build up of rust on the inside of the casing. Especially at the joints. If there is a question in your mind about this you can usually eliminate the problem with the following procedure.
Attach a 1 1/4" steel coupling to the male threaded side of one of our extensions. lower it down the well and attach extensions to reach the depth you intend to lower the pump to. If you encounter obstructions along the way, you can tap the obstruction by raising and lowering the extension pipe until it moves downward. This process should only be used to remove rust build up on the inside wall of the casing and not for other types of obstructions. If there is something else down there you will have to remove it before the pump installation can proceed.


 

3″ Wells

3" wells are fairly rare in our part of the country. Sometimes you will see one when a 4" well has been re-cased. If you are installing two pumps in such a well then the other pump with have to have an pipe outside diameter of no more than 1". A 1/2" PVC or steel pipe has an outside diameter of 7/8" so it will work. However a well seal will have to be adapted for this use.


Water Well Types standard casing

This setup would normally take a two hole well seal to accommodate our pump.

 

Standard Wells with ABS Plastic or Steel Well Seals. 4″ And Up.

This image depicts a standard 6" well with a submersible pump that uses a 1" feed line. This is a fairly straight forward conversion to include our pump. You would want to include the 6" well seal that works in this configuration. Normally a 6" 2 hole seal would be used. It is located HERE. Likewise, if you have a 4", 5" or 8" casing you would order that well seal. For convenience sake we carry  several types of well seals that have either one or two openings. The one for our pump measures 1.66" or the standard outside diameter of 1 1/4" pipe and on the two opening seals an opening that is 1.40" or the outside diameter of 1" pipe. If you have a larger or smaller pump feed line on your primary pump, it will have to be adapted at the seal to accommodate the opening or modify the seal itself with a hole saw to accommodate a larger pipe on your existing pump.
If you have a larger well such as 10", 12", 18" or larger, a (1.66")  hole can be bored into the seal to accommodate our pump. All of them can accept our pump by using the Universal Well Seal Adapter that is included with all of our pumps.
 
Well Seal Assortment Two Hole Seal
crimp well seal adapter with bolts

Universal Well Seal Adapter

 
 
 

6" pitless with adapter

Pitless type well seal with Universal Well Seal Adapter installed

Wells With A Pitless Adapter. Except 4″

Wells with pitless adapters are very common in colder climates. All that enters the well from above is the electrical. That is done in a 'U' shape as shown in the image. The Pitless Adapter is usually located 4 to 5' down the inside of the casing. It is a brass or stainless steel fitting that redirects the water out the side of the casing below the frost line. The water then goes to the water system underground. The adapter is removable by threading in a piece of pipe from above and pulling it up. There could also be a permanent handle attached. On the adapter itself there is a seal that keeps the water from leaking when the adapter is in place.
The image to the right shows how a pitless may look in your well With our included Universal Well Seal Adapter installed.


 

Pitless Adapter

4″ Well With Pitless Adapter

2323892_orig  A 4" well with a pitless adapter can be a bit disconcerting. Things are very tight. The first thing to do is to remove the metal cap and see what is inside. If you find a centering device that holds the steel pipe to lift the pitless adapter out of the well then things can get tricky. But it is still mostly doable with a little more work. If your well opening is fairly clear after you remove the cap, take a piece of 1" PVC pipe with a coupling glued to the end and see if you can lower it down beside the pitless adapter and get past it. If you can, then our pump will work. The important part is to get the pump past the pitless adapter. Our Universal Well Seal Adapter should work in this configuration as well.
UPDATE!! With our new super precision piston our pumps can now be used as a suction pump for a distance of 25' down the well. This means that you can position the pump assembly just above the pitless adapter and connect a smaller diameter line to the bottom of the pump assembly along with a foot valve on the bottom or a check valve at the bottom of the pump. This will allow you to get a maximum  of 25 feet deeper than the pitless adapter if you have very limited space.