Typical Residential Well System

Use the diagram below to learn more about the parts and equipment used in a typical residential well system. Simply click on a numbered section to learn more about that component. On a mobile device scroll to see more of the diagram.
You can also download our PDF version by clicking here.


Well and Water Residential Diagram


1) Submersible Pump
Submersible Pump image

Pumps water from the well to supply pressurized water for the home.

2) Pump Check Valves
Pump Check Valves image

Located at the top of the pump, it prevents backflow into the pump and holds the head of water in the system.

3) Brass Male Adapter
Brass Male Adapter image

Provides connection between poly pipe and pipe thread.


4) Heat Shrink Splice Kit
Heat Shrink Splice Kit image

For waterproof electric cable splices in submersible pump installations.

5) Stainless Steel Clamp
Stainless Steel Clamp image

All-stainless steel clamps for dependable connections between pipe and insert fittings or torque arrestor.

6) Torque Arrestor
Torque Arrestor image

Installed directly above submersible pumps to protect pump and well components from starting torque damage.


7) Saftey Rope
Saftey Rope image

A safety line from the top of the well to the pump.

8) Cable Guard
Cable Guard image

Protects submersible cable wires from abrading against sides of well.

9) Lead Free Electrical Tape
Cable Tie image

Fastens Cable to Drop Pipe.


10) Pump Wire
Pump Wire image

Wire that connects a submersible pump controller to the pump motor.

11) Coil Plastic Pipe
Coil Plastic Pipe image

Connects the pump to the pitless adapter.

12) Brass Rope Adapter
Brass Rope Adapter image

Connects the pitless adapter and the submersible pump with safety rope.


13) Pitless Adapter
Pitless Adapter image

Provides a watertight, sanitary, removable connection between the pump and the house. Installed in casing below the frost line to prevent freezing.

14) Watertight Well Cap
Watertight Well Cap image

Inner gasket compresses to outside diameter of casing to provide a watertight seal. Top of cap removes easily to access well for service.

15) Well Seal
Well Seal image

Used in above-ground installations to provide a positive seal inside casing.


16) Lightning Arrestor
Lightning Arrestor image

Protects pump motor and controls from voltage surges caused by lightning, switching loads, and power line interference.

17) Disconnect Switch
Disconnect Switch image

For electric control and distribution to the pump.

18) Tank Check Valve
Tank Check Valve image

On pump installations, a tank check valve installed near the tank inlet holds water in the tank when the pump is idle.


19) Drain Valve
Drain Valve image

For easy draining of the system.

20) Tank Tee
Tank Tee image

Connects water line from pump to pressure tank and service line from tank to house. Taps are provided to accept pressure switch, pressure gauge, drain valve, relief valve, snifter valve, etc.

21) Relief Valve
Relief Valve image

Protects against pressure build-up. Should be used on any system where the pump could develop greater pressure than the maximum rating of the system. Part


22) Pressure Gauge
Pressure Gauge image

Measures water pressure in pressure tank.

23) Brass Nipple
Brass Nipple image

Male threads allow attachment of pressure switch to tank tee.

24) Pressure Switch
Pressure Switch image

Signals the pump to start when the water system drops to a preset low pressure, and to stop when the high pressure mark is reached.


25) Ball Valve
Ball Valve image

Acts as a shutoff valve on the supply line from the tank to the house.

26) Pump Tank
Pump Tank image

Container for storing water used throughout the home.

27) Water Filter
Water Filter image

A point-of-entry, whole-house-filter that removes rust particles, sand, etc. from supply water.

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