Well Water Pump Pressure Control Switch

The starting and stopping of a well water pump is typically controlled by a pressure switch similar to the one shown below.

Well water pump pressure control switch.

The switch is preset with both the cut on and cut off pressure. This switch is equipped with a low level cut off arm that automatically shuts off a well pump when there is a dramatic decrease in pressure such as a leak in the discharge pipes or a faulty pressure tank. 20 to 40 30 to 50 and 40 to 60 psi. 00 get it as soon as thu sep 24.

It turns off when the maximum psi is reached. Basically your pressure switch tells your well pump which delivers water to your home when to turn on and off. Switches come in three pressure ranges. Always replace your switch with one of the same rating usually printed inside the plastic cover of your old switch.

When you buy this control it is usually set at the proper cut in and cut out pressures check the box. The air pressure in the well tank when empty of all water must be set to 28 psi or the switch will not operate properly. Also buy a new pressure gauge less than 10 and a 1 4 in. 00 get it as soon as wed sep 23.

Merrill mps4060 water well pressure control air pump pressure switch 40 60 psi pressure setting nema 1 adjustable differential 1 4 female npt 15 00 15. Merrill mps4060 water well pressure control air pump pressure switch 40 60 psi pressure setting nema 1 adjustable differential 1 4 female npt 15 00 15. A pump or water tank pressure control switch is designed and adjusted to turn the pump on at a cut in pressure usually 20 psi or 30 psi and to turn the water pump off at a cut out pressure usually 40 psi or 50 psi. This switch must be used in conjunction with a well pressure tank.

It replaces a pressure switch pump protector and pressure gauge. It does this by monitoring pressure and letting more water flow into the system when the pressure falls to the minimum psi pounds per square inch.