A Water Pump Pressure Switch

It can be wired 115 volt or 230 volt.

A water pump pressure switch.

Merrill mps3050 water well pressure control air pump pressure switch 30 50 psi pressure setting nema 1 adjustable differential 1 4 female npt 4 0 out of 5 stars 6 15 00 15. The starting and stopping of a well water pump is typically controlled by a pressure switch similar to the one shown below. It makes use of two pressure systems to control the water flow and adjusting the water pressure involves adjusting these systems. Merrill mps4060 water well pressure control air pump pressure switch 40 60 psi pressure setting nema 1 adjustable differential 1 4 female npt 4 5 out of 5 stars 2 15 00 15.

This pressure switch signals the pump to start this pressure switch signals the pump to start when the water system drops to 30 psi factory set and stops at 50 psi factory set. Check the pressure gauge to make sure it isn t stuck or. Check the well tank pressure gauge to see if it is at least 40 psi or the cut off psi for your pressure switch model. The cut on pressure is the low pressure that starts the pump and the cut off pressure is the high pressure that turns off the pump.

The individual well pump control switch repair article links below explain exactly how to set the water pump pressure switch where the adjustments are located the large and small nut found under the switch cover which way to turn the nuts to increase or decrease the pump cut in and cut out pressures and other pressure switch. The well pump water pressure switch controls the rate at which the pump will turn on and off. Without the use of the switch the water pump would always be on or off. Normally this switch is pre set to the correct pressure but you can modify it without any special tools or materials using just plumbers pliers.

This switch is to be used with submersible well or jet pumps. However with the pressure switch the pump can be adjusted to turn on and off at predetermined settings to control the pump and subsequent pressure. The switch is preset with both the cut on and cut off pressure.