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Jet Pump FAQs

What is a jet pump?

A jet pump is a non-submersible pump that utilizes two fundamentals of pumping - ejection and centrifugal operation. Ejection is achieved by using a nozzle to blow water through a venturi to create a vacuum that will pull water through and force it out the other end by use of an impeller. The use of the impeller to move the water is what makes a pump centrifugal.

Where do I find the nameplate?

The name plate can typically be found on the top of the pump, this includes information you may need such as date of manufacture, model number, horsepower etc.

What is the difference between a deep and shallow well?

In terms of sizing jet pumps, a shallow well has a maximum of 25’ in depth to the surface of the water and a deep well is up to 120’. Deep well installations utilize a deep well ejector kit that is matched to the pumps capabilities.

What is a convertible jet pump?

The term convertible refers to the pumps ability to be used in deep or shallow well installations. In a deep well, the ejector kit is placed in the well. In a shallow well, it is on the pump.

What is suction lift?

Suction lift is the vertical distance between the inlet of the pump and the surface of the water being pumped. Essentially the elevation the water must travel from the surface to the pump.

Can I repair my pump?

Most jet pumps are repairable. For a full parts list refer to your owner’s manual or call us for assistance.

How do I prime my pump?

Disconnect electricity to the pump. Remove your priming plug located on the wet end of your pump (not the motor). Fill the orifice with water until there is no more bubbling and it holds steady at the hole. Replace priming plug. Reconnect electricity and turn it on. Check the pressure. If pump is steadily building pressure you have successfully primed it, if not, repeat the priming process. Click here for R.C. Worst YouTube Video: How to Prime a Jet Pump

What is a foot valve?

A foot valve is a valve that only lets water flow in one direction. It is located on the end of your suction line and has a strainer on it. This allows the system to hold prime and pressure when the pump is not running.

What does a pressure switch do?

The pressure switch is a form of an electrical switch that opens and closes electrical contacts according to the pressure that is currently in the system. Pressure switches have two values: The lower pressure is known as “cut on” pressure and the higher pressure is known as “cut off” pressure. The typical factory settings for a jet pump are either 20/40 psi, 30/50 psi, or 40/60 psi. The pressure switch will engage the contacts when the “cut on” pressure is reached (water usage in the house) and disengage the contacts when the “cut off” pressure is reached.

Can I adjust my pressure switch?

Yes. To raise or lower your pressure you will need to turn off the power to the switch and take the cover off. There will be two nuts, a large one and a small one. DO NOT TINKER WITH THE SMALL NUT. The small nut is the 20 psi differential between your cut on and cut off pressure and is essential to the life of your system. Each quarter turn of the large nut will raise or lower the psi of both the cut on and cut off pressure by three psi. Clockwise will increase pressure, counterclockwise will decrease pressure. Be careful though, increasing the pressure may put too much demand on the pump and could destroy it. Call us if you need assistance. Click here for R.C. Worst YouTube Video: How To Adjust a Pressure Switch

Do I need to winterize my jet pump?

Pumps that cannot be stored inside during cold seasons must be protected from freezing conditions. Click here for R.C. Worst YouTube Video: How to Winterize a Jet Pump

Do I need a pressure tank?

If you would like to prolong the life of your pump, yes. Choosing the proper tank for your pumping system will greatly reduce the risk of premature pump failure. If you fail to invest in the correct size pressure tank, you can short cycle your pump. Short cycling is a term used to describe when your pump is turning on and off too frequently. It increases energy use and can cause premature failure of your pump as it builds up excessive heat. When it comes to pressure tanks, bigger is almost always better. Click here for R.C. Worst YouTube video: How to Size a Pressure Tank

Click below to see RC Worst YouTube videos:

The Basics of a Jet Pump

7 Things Every Jet Pump Owner Should Know