During the next few months, we will focus on the electrical side of pumped water systems. We start by looking at the components in two-wire and three-wire single-phase systems, explaining the purpose, function and options available for each.
"Submersible pump accessories are the plumbing and electrical components of a pumped water system that are particular to a submersible pump system vs. a jet pump system."
"Check valves permit water flow only in one direction, and are required on all submersible pump installations. The purpose of a check valve is to prevent the water in the column above the pump and in the pressure tank from draining back into the well when the pump shuts off."