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Pressure Switch FAQs

What is a pressure switch?

A pressure switch is typically used to turn a jet pump or submersible well pump on and off. The pressure switch signals the pump to start when the water system drops to a set PSI and off when the system increases to a set PSI. They can be wired to work with 115 or 230 volts. Pressure switches must be used with a pressure tank.

Can I adjust my pressure switch?

Yes, pressure switches are adjustable. They are typically preset at 30/50 (on at 30 PSI, off at 50 PSI) or 40/60. There is a nut to adjust the differential and a nut to adjust the range. Check out our blog or YouTube videos below:

Click here for blog "How To Adjust a Pressure Switch"

Click here for RC Worst YouTube video "How To Adjust a Pressure Switch"

What should my settings be?

If you are a homeowner, whether you have your pressure switch set at 30/50 or 40/60 is a matter of personal preference. You will need to take into consideration whether you are satisfied with the amount of water pressure in the different areas of your home. For a single level home or a two story home without water fixtures on the 2nd floor a 30/50 PSI setting may be sufficient. For two or more levels with water fixtures on more than one level you may want to use 40/60 PSI setting

Click here for RC Worst blog "30/50 or 40/60 PSI: What pressure to set your system to"

What is my pressure switch currently set at?

The preset setting is listed on the bottom of the cover.

What is a low pressure cut-off switch?

Some switches come with a low pressure cut-off switch. The low pressure attachment drops to turn off the pump when it loses its prime and the pressure drops to a specific low pressure cut-off point.

Click here for RC Worst YouTube video "Low Water Pressure Cutout Switch | Square D M4 Pressure Switch W/ Low Pressure Cut-Off"