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At Froe Bros Drilling, we serve Cook, Minnesota, and the surrounding areas with water well drilling, pump sales and service. Our services include submersible and jet pumps, new well system installation, water well sealing, hydro-fracking and associated equipment and products.
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About Submersible Pumps
VERTICAL LIFT/ELEVATION |
DRAWDOWN |
The vertical distance between the well head and the level at the point of use. It must be added to the TOTAL DYNAMIC HEAD if the inlet is lower than the outlet and subtracted if the inlet is higher. As a rule of good installation practice, however, pipes should slope continuously upward from the inlet to the outlet to prevent entrapment of air.
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The distance that the water level in the well is lowered by pumping. It is the difference between the STATIC WATER LEVEL and the PUMPING LEVEL. |
SERVICE PRESSURE |
FRICTION LOSS |
The range of pressure in the pressure tank during the pumping cycle.
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The loss of pressure or head due to the resistance to flow in the pipe and fittings. Friction loss is influenced by pipe size and fluid velocity, and is usually expressed in feet of head. |
PUMPING LEVEL |
HORIZONTAL RUN |
The lowest water level reached during pumping operation.
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The horizontal distance between the point where fluid enters a pipe and the point at which it leaves. |
STATIC / STANDING WATER LEVEL |
TOTAL DYNAMIC HEAD OR TDH |
The undisturbed level of water in the well before pumping. Not as important as pumping level.
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TDH and capacity required determines pump size. The total pressure or head the pump must develop is the sum of the VERTICAL LIFT/ELEVATION, THE SERVICE PRESSURE, PUMPING LEVEL, and THE FRICTION LOSS. All of these measurements must be expressed in the same units, usually feet of head or pressure (PSI), before adding them together. |