What kind of pump should I use?
Your well will need a pump to pull or get the water out of the ground. What kind of pump you use depends on a few different factors. These factors are:
Next would be a jet pumps. A jet pump can work typical on water table distances from 0 feet to over 100 feet. A jet pump is designed differently and has one or two vertical drop pipes that are installed inside the well casing. The easiest way to explain how a jet pump works is that it is similar to blowing air into a drink through a straw and the drink comes rushing back up the top.
The only main difference is that a jet pump pushes water down, not air, using hydraulics to its' advantage.
The third type of pump similar used for irrigation is a submersible pumps. Submersible pumps can work on very deep well distances and are are used typical on well casing diameters of 3", 4", 6", and bigger. A submersible pump is installed inside the well submerged in the water at a certain distance determined by a couple of factors such as water table and screen depth and size.
On a 2" well less than 100 feet with water table that is more than 20 feet but less than 80 feet I would recommended a Multi-stage jet pump for irrigation use. You'll get a max of about 15 gallons per minute out of the 1hp pump, depending on the well. More horse power will not necessarily mean more water either, it is all dependent on the water source. How good of sand or rock you are in.
On a shallow well where the water table is less than 20 feet, a centrifugal pump will work fine. In a good saturated area with good sand, a standard 1.5 hp commercial centrifugal pump (such as a Sta-Rite) could produce up to 60 gallons per minute.
A submersible pumps output also depends on the depth to water, the placement of they pump, the water source, and the horse power and number of impellers on the pump. My team and I have personally installed a 7 horse power, 70 gallons per minute pump (gpm), set at 160 feet on a 200' well. It was a big commercial job system. On a residential sprinkler system a 1.5hp/20 gpm or 2hp/30 gpm is usually plenty.
If have a well and are having trouble figuring out what kind of pump you need to use call a well driller, irrigation contractor, or try and figure it out your self by finding out a few different factors about the well that I have mentioned previously. First of all, if there was a previous pump that was on or still on, that used to work, chances are that you should replace it with the same horse power and model pump. Unless a previous owner or other contractor messed with it and didn't know what he was doing, you shouldn't go wrong replacing it with the same type.
Centrifugal pumps are the easiest to install because the check valve and well fittings are plumbed above ground. Jet pumps require the removal of the pump as well as one or two smaller diameter drop pipes inside the well, which can get tricky if you are not experienced in th well and pump installation practices in that area. Submersible pumps require previous experience with trained personnel to properly remove, repair, or install the pumps. One wrong move when performing this can be dangerous and disastrous to the well and/or pump.
If you still need help figuring out what kind of pump to use, call a local well driller or irrigation contractor or company, they may need to come out and look at it themselves if you know or understand little about it.. Another good source would be an irrigation wholesale parts supplier such as Ewing Irrigation, Tieco, Stoval, or other lawn sprinkler/irrigation parts store.
Scott
http://www.autolawnsprinklers.com
- Size (Diameter) and type of the Well (PVC or galvanized)
- The distance to the water table
- The depth of the well
Next would be a jet pumps. A jet pump can work typical on water table distances from 0 feet to over 100 feet. A jet pump is designed differently and has one or two vertical drop pipes that are installed inside the well casing. The easiest way to explain how a jet pump works is that it is similar to blowing air into a drink through a straw and the drink comes rushing back up the top.
The only main difference is that a jet pump pushes water down, not air, using hydraulics to its' advantage.
The third type of pump similar used for irrigation is a submersible pumps. Submersible pumps can work on very deep well distances and are are used typical on well casing diameters of 3", 4", 6", and bigger. A submersible pump is installed inside the well submerged in the water at a certain distance determined by a couple of factors such as water table and screen depth and size.
On a 2" well less than 100 feet with water table that is more than 20 feet but less than 80 feet I would recommended a Multi-stage jet pump for irrigation use. You'll get a max of about 15 gallons per minute out of the 1hp pump, depending on the well. More horse power will not necessarily mean more water either, it is all dependent on the water source. How good of sand or rock you are in.
On a shallow well where the water table is less than 20 feet, a centrifugal pump will work fine. In a good saturated area with good sand, a standard 1.5 hp commercial centrifugal pump (such as a Sta-Rite) could produce up to 60 gallons per minute.
A submersible pumps output also depends on the depth to water, the placement of they pump, the water source, and the horse power and number of impellers on the pump. My team and I have personally installed a 7 horse power, 70 gallons per minute pump (gpm), set at 160 feet on a 200' well. It was a big commercial job system. On a residential sprinkler system a 1.5hp/20 gpm or 2hp/30 gpm is usually plenty.
If have a well and are having trouble figuring out what kind of pump you need to use call a well driller, irrigation contractor, or try and figure it out your self by finding out a few different factors about the well that I have mentioned previously. First of all, if there was a previous pump that was on or still on, that used to work, chances are that you should replace it with the same horse power and model pump. Unless a previous owner or other contractor messed with it and didn't know what he was doing, you shouldn't go wrong replacing it with the same type.
Centrifugal pumps are the easiest to install because the check valve and well fittings are plumbed above ground. Jet pumps require the removal of the pump as well as one or two smaller diameter drop pipes inside the well, which can get tricky if you are not experienced in th well and pump installation practices in that area. Submersible pumps require previous experience with trained personnel to properly remove, repair, or install the pumps. One wrong move when performing this can be dangerous and disastrous to the well and/or pump.
If you still need help figuring out what kind of pump to use, call a local well driller or irrigation contractor or company, they may need to come out and look at it themselves if you know or understand little about it.. Another good source would be an irrigation wholesale parts supplier such as Ewing Irrigation, Tieco, Stoval, or other lawn sprinkler/irrigation parts store.
Scott
http://www.autolawnsprinklers.com
posted by Irrigationman at
8:56 PM
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