Jet Pump Priming: Easy Steps for Success

Emily Jul 26, 2026

Jet pump priming is an essential process that ensures the proper functioning of jet pumps. A jet pump, as the name suggests, is a type of pump that operates by using the force of a jet of water to draw additional water into the system. Priming this type of pump involves filling the system with water before it can begin pumping. In this comprehensive guide, we'll delve into the intricacies of jet pump priming, its importance, and the step-by-step process involved. By the end, you'll have a clear understanding of how to prime a jet pump efficiently and safely.

How to Prime a Jet Pump
How to Prime a Jet Pump

The primary reason why jet pump priming is crucial is to remove any air trapped within the system. Air pockets can significantly reduce the pump's efficiency and may even cause damage over time. Moreover, priming ensures a continuous water supply, preventing potential disruption in your water system. Let's now dive into the detailed process of jet pump priming.

Top Advantages of Our Self-Priming Jet Pump
Top Advantages of Our Self-Priming Jet Pump

Understanding the Jet Pump System

Before we proceed with the priming process, it's crucial to understand how a jet pump system works. A jet pump typically consists of a small venturi, a check valve, and pipes connecting the components.

the diagram shows different parts of a machine that is being used to make an electronic device
the diagram shows different parts of a machine that is being used to make an electronic device

The venturi creates a vacuum that draws water from a nearby source (like a well or storage tank) into the system. The check valve then prevents the water from flowing back into the source once the pump is turned off. With this basic understanding, let's proceed to the priming process.

The Step-by-Step Jet Pump Priming Process

How to Prime a Well Pump
How to Prime a Well Pump

Priming a jet pump is a straightforward process that can be done manually or automatically, depending on the pump's design. We'll discuss both methods in this section.

Manual Jet Pump Priming

Manual priming involves physically filling the pump with water. This process requires you to locate the pump's priming plug, usually positioned at the lowest point on the body of the pump. Here are the steps:

Cross border stainless steel jet pump household self-priming pump water heater booster  high head
Cross border stainless steel jet pump household self-priming pump water heater booster high head
  1. Begin by closing the outlet valve of your jet pump system to trap any water still in the system.
  2. Locate and remove the priming plug. This will allow water to flow into the pump.
  3. Open the intake valve and allow water to fill the system.
  4. Once water reaches the level of the intake valve, close it to trap the water in the system.
  5. Replace the priming plug and open the outlet valve. At this point, your jet pump should be primed and ready to operate.

Automatic Jet Pump Priming

Some jet pumps come with an automatic priming feature. These pumps typically have a small chamber with an air bleed screw located at the top. Here's how to prime an automatic jet pump:

CHIMP JET100L JET200L Self Priming Jet Pump 1HP 2HP Pam Air Rumah Tekanan Air Booster Water Pump
CHIMP JET100L JET200L Self Priming Jet Pump 1HP 2HP Pam Air Rumah Tekanan Air Booster Water Pump
  1. Begin by closing the outlet valve and turning off the pump.
  2. Open the air bleed screw located at the top of the pump. This will allow air in the system to escape.
  3. Open the intake valve and allow water to fill the system. You'll see water bubble out of the air bleed screw as the system fills.
  4. Once water stops bubbling out of the air bleed screw, close the intake valve and the air bleed screw.
  5. Turn the pump back on and open the outlet valve. Your jet pump should now be primed and ready to operate.

Tips for Successful Jet Pump Priming

VALCO Conva™ Deep Well Packer Jet selfpriming Electric Pump Twin Pipe installation
VALCO Conva™ Deep Well Packer Jet selfpriming Electric Pump Twin Pipe installation
How to Prime a Two Line Jet Pump | 7 Simple Steps (2026)
How to Prime a Two Line Jet Pump | 7 Simple Steps (2026)
ZTOOLS SHIMGE Automatic Self-Priming Jet Pump 0.5HP/1HP/1.5HP JET370G2 & JET750G2 Home Water Booster Pam Air Rumah
ZTOOLS SHIMGE Automatic Self-Priming Jet Pump 0.5HP/1HP/1.5HP JET370G2 & JET750G2 Home Water Booster Pam Air Rumah
REAIM Deep Well Jet Pump Water Pump Automatic Self Priming Pressure Tank 750W For Rumah Tank
REAIM Deep Well Jet Pump Water Pump Automatic Self Priming Pressure Tank 750W For Rumah Tank
ZTOOLS NEOVIN Automatic Self-Priming Jet Pump 1HP Pam Air Rumah Home Water Pressure Booster Pump
ZTOOLS NEOVIN Automatic Self-Priming Jet Pump 1HP Pam Air Rumah Home Water Pressure Booster Pump
Liquid Eductors for Pumping, Mixing, Blending, and Venting
Liquid Eductors for Pumping, Mixing, Blending, and Venting
Marquis Self-Priming Jet Pump
Marquis Self-Priming Jet Pump
Maxijet Hyjet Dhj800 Pressure Pump Jet Impeller 60 L/Min
Maxijet Hyjet Dhj800 Pressure Pump Jet Impeller 60 L/Min
Jet Pump
Jet Pump
REAIM intelligent self-priming pump 304 stainless steel  1.5HP  40M high lift  self-priming jet pump fully automatic household self-priming booster pump
REAIM intelligent self-priming pump 304 stainless steel 1.5HP 40M high lift self-priming jet pump fully automatic household self-priming booster pump

Here are some tips to help you prime your jet pump successfully:

  • Always bleed air from the system before attempting to prime. This ensures that all air pockets are removed, improving the priming process's effectiveness.
  • Prime your jet pump regularly to prevent air from accumulating in the system. Most manufacturers recommend priming your jet pump every six months.
  • Ensure the water source is high enough above the pump to give it sufficient suction power. If the water source is too low, you may need to install a booster pump.
  • Keep your jet pump and entire system clean to prevent sediment and debris buildup, which can interfere with priming and overall pump efficiency.

Jet pump priming is a critical process that ensures your water system functions smoothly and efficiently. Whether you're manual or automatic priming, understanding the steps and best practices will help you maintain your jet pump in optimal condition. Always remember to follow the manufacturer's instructions for your specific pump model. If you're unsure about any part of the process, don't hesitate to consult a professional.

In the world of water pumps, jet pumps offer a unique and powerful solution for drawing water. With proper priming and maintenance, your jet pump will serve you well, ensuring a steady and reliable water supply. So, the next time you notice air in your water lines or reduced water pressure, don't forget to check if your jet pump needs priming. Happy priming!