pump sales & service

At Kolstad Olson Drilling, we serve Cook, Minnesota, and surrounding areas with water well drilling and pump sales and service. Our services include submersible and jet pumps, as well as new well system installation, water well sealing, hydro-fracking and associated equipment and products.  

Typical Submersible Installation Illstration

about submersible pumps

Basic installation information and terms related to submersible pumps.

 Vertical Lift / Elevation 
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.

 Service Pressure 
The range of pressure in the pressure tank during the pumping cycle.

 Pumping Level 
The lowest water level reached during pumping operation.

 Static or Standing Water Level   

The undisturbed level of water in the well before pumping. Not as important as pumping level.

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.

 Friction Loss 
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. 

 Horizontal Run  

The horizontal distance between the point where fluid enters a pipe and the point at which it leaves. 

 Total Dynamic Head or TDH 
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.

about our pump products

AMTROL: Well-XTrol are quickly becoming the industry standard. This tank is loaded with features that distinguish it from the competition.

Solidly constructed with a welded, stainless steel connection, the  AMTROL puts the tank in water tank.  AMTROL tanks are distinctly designed with a patented and innovative controlled action diaphragm (CAD), which eliminates coatings, liners and plastic bladders.

Submersible Pumps
Stainless Steel - 4"
23000 submersibles offer peak capacity performance in 5, 7, 10, 13, and 18 GPM models. All four inch submersibles are supplied with grounded leads meeting the National Electrical Code (N.E.C.) specifications.

  • One piece replacement cartridge - easier to service for minimal down-time
  • Powered by NEMA-approved stainless steel motors with built-in lightning protection
  • 3 Wire single phase models include pump, motor, 48" leads, control box and check valve.
  • 2 Wire single phase models include pump, motor, 48" leads and check valve.
  • 3 Wire three phase models include pump, motor 48" leads, magnetic starter, heaters and check valve.

Submersible Pumps

  • Injection molded glass filled Noryl motor bracket and discharge
  • Stainless steel pump shell
  • Polycarbonate diffusers
  • Acetal impellars
  • Stainless steel pump shaft
  • Glass filled Noryl check valve standard
  • Powered by NEMA-approved stainless steel motors with built-in lightning protection
  • 2 and 3 wire models

Submersible Pumps
Turbine Pump Ends - 4" - 8"

We offer a full line of 4", 5", 6", 7" and 8" submersible turbine pump ends ranging from 1 1/2 horsepower through 100 horsepower. Our submersibles offer peak capacity performance in 90, 105, 110, 130, 140, 200, 250, 260, 450, and 600 GPM.

  • All turbine submersible pump ends are constructed of cast iron and bronze.
  • Each pump end includes cable guard, bolts, washers, and coupling.
  • Motors and controls must be ordered separately.

About Controls & Heaters

For use with 4" single phase submersible motors 1/3 through 1 1/2 HP.

Protects against: 
  • Low yield wells 
  • Low voltage 
  • Air or gas locked pump 
  • Drop in water level 
  • Clogged well screen 
  • Broken shaft or coupling 
  • Worn pump parts

Standard Integral HP Control Box
For use with single phase submersible motors.

Sub/Jet Accessories

We use the finest available products in all of our pump installations. Various accessories include but are not limited to:

  • Check Valves
  • Brass Tank Tees
  • Pipe Holder
  • Air Volume Controls
  • Sanitary Well Seals
  • Silicon Bronze Foot Valve
  • Pressure Relief Valve
  • Pressure Switches
  • Pressure Gauge