Centrifugal Pumps/

Jet Pump

A jet pump is a centrifugal pump that increases water pressure in shallow and deep wells by converting the mechanical energy of an impeller into kinetic energy. Jet pumps are the most common pump for shallow wells and are mounted above or outside of the well itself. The weight of the air (atmospheric pressure) determines the height that water can be lifted. The limit is usually around 25 feet. However, jet pumps can be effective for deep wells if the jet is separated from the motor and placed down in the water.

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Hydra-Tech Pumps, Inc.
Nesquehoning, PA
570-645-3779
Hydra-Tech Pumps can help handle your most difficult jobs. Our centrifugal screw pumps are able to handle high viscosity liquids like refinery waste, molasses, latex and crude oil. We can make standard pumps as well as custom design them to fit your needs. We offer the widest variety of models in a variety of materials. Hydra-Tech is CE Certified and can help find or design the right pump for you.
 
Ace Pump Corporation
Memphis, TN
901-948-8514
Ace Pump manufactures hydraulic, PTO Belt, Belt, Magnetic Clutch, Gasoline Engine and Electric Motor driven centrifugal pumps and air conditioning and refrigeration centrifugal pumps. We serve the chemical, off-highway and cooling markets. Our custom designs offer mounting versatility, customized performance and easy maintenance. We are ISO9001 Certified and can deliver your pump solutions today.
 
SCC Pumps, Inc.
Arlington Heights, IL
800-334-1199
SCC Pumps is known worldwide as "The Small Pump Specialists." We supply high-quality small pump products worldwide. We manufacture small, corrosion-resistant, plastic end-suction centrifugal pumps. Our centrifugal pumps are small in size, available A/C or D/C, and made for recirculation and transfer use. Our engineering experts can work with you to make a custom pump that fits your needs.
 
Texas Process Equipment
Houston, TX
800-828-4114
Texas Process Equipment supplies specialty pumps, such as centrifugal pumps and other process equipment. We offer centrifugal pumps from Chempump, Barnes Pumps, Isochem, Micropump, Price Pump and more. Through a common sense approach to business, communication and information technology, we offer the lowest "total cost of ownership" to our customers. Call us today to see what we can do for you.
 
Pacific Design Technologies, Inc.
Goleta, CA
805-961-9110
Pacific Design Technologies manufactures centrifugal pumps for aerospace, defense and space applications including fluid cooling and circulation pumps, accumulators, thermal control valves and systems. These pumps use specialized fluids like PEO, EGW, PGW, Freon, Ammonia, Refrigerants, Jet Fuels and more. Pumps are AC or DC powered, and come in various voltages. Visit our website today.
 
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Industry Information

Jet Pump

Jet pumps consist of an impeller, a volute and a motor and are made of aluminum, cast iron or stainless steel. Jet pumps are used exclusively for lifting and transporting water from its underground source to buildings for human use, a valuable application that finds use in commercial, industrial, general purpose and residential environments. While other centrifugal pumps are used in wastewater and sewage treatment plants to handle trash and refuse, jet pumps are meant to increase the pressure of a liquid free from solids. Hardly any other liquids require high pressure pumping to be removed from deep underground and those that do use, such as oil, employ different techniques with more powerful machinery.

Jet pumps are generally electric pumps. The motor turns the impeller which drives the water through a narrow opening called a jet that is mounted in the housing in front of the rotating vanes. Because of the constriction, the speed of the water increases and as it is pumped through the opening, a partial vacuum is created which lifts additional water from the well. A Venturi tube (also called an ejector) behind the jet acts like the volute found in other centrifugal pumps. The tube's diameter increases, slowing the water while increasing its pressure. The water passing through the Venturi tube is joined by the water that was drawn up by the partial vacuum and the stream is discharged at high pressure. The water is then pumped directly into a plumbing system or into a storage tank with a bladder to maintain the necessary pressure. For deep wells, the jet is separated from the motor and impeller and placed down the well in the water. A piping system drives water down into the jet so that the pump is pushing it up instead of lifting. Like most shallow well pumps, jet pumps need to be primed to work. A tailpipe can prevent overpumping by detecting when the flow rate drops and switching between deep and shallow well pumping. Jet pumps that have more than one impeller are called multistage pumps and are used for wells hundreds of feet deep.