Reverse Action Pressure Switch for Solar Pumps (Optional Poly Pipe Barb Tee)
RPS Solar Pumps
Square D brand like traditional AC pump pressure switches, just working in reverse electrically. These switches complete a circuit with 2 signal wires when the pressure is up to the setting. Those 2 signal wires run into and any RPS Solar Pump Controller (RPS 200, 400, 800 Pumps and RPS Pro Series) Set to 30/50 psi by default but adjustable. Remember each psi means 2.31ft of head on your pump.
Since AC pump traditionally are powered on and off with a pressure switch located on a tank tee of a pressure tank, many times there are not signal wires setup underground between the well head and the storage tank. Not a problem. An alternative to wires is a pressure switch attached to the plumbing from the well head to the tank. At the pump you’ll need a check valve, and on the tank you’ll need a mechanical float valve (ball float that closes a 3/4″ or 1″ valve and shuts off water) that will spike pressure in the line when it closes. Somewhere along the line between the two you need a ‘Tee’ with 1/4" Male threaded nipple and a reverse action pressure switch to your pump controller.
Check out diagrams of solar pump systems using reverse action pressure switches, use filter "Pressure Shut Off".
Let us know if you have questions but they are really easy to install and wire!