I am about to have a well drilled at my cabin. I am expecting to go about 200'. As soon as the drilling is done, I will check back with this forum for sugustions on materials to install the plumbing.(pump, tank, etc..)

I have been doing research on the functions of the diferent components and it seems prety straight forward. One thing that I am not sure of, is the use of check valves in this type of system. The diagrams I see show the Pump, 1" pipe to the pitless, piping below ground to the tank in the cabin, and the electrical controls.

Are check valves used in this type of well to prevent water from draining back? If so where are they located and what kind are used?