The Basics of a Jet Pump

R.C. Worst & Co., Inc.

12 Jul 201704:25

Summary

TLDRThis video covers the fundamentals of jet pumps, explaining how they work and the differences between shallow and deep well jet pumps. Jet pumps, typically used in residential and light commercial settings, lift water from the ground through a suction pipe. The depth of the water determines the pump type, with shallow well pumps lifting up to 25 feet and deep well pumps reaching over 160 feet. The video also discusses the importance of the jet ejector, which increases suction and enables water lifting from greater depths.

Takeaways

💧 Jet pumps are used for extracting water from wells and bodies of water through a suction pipe.
🌍 Jet pumps are popular in warmer climates and areas with a high water table.
🚰 They are typically used for residential water supply, irrigation, and pressure boosting applications.
📏 Shallow well jet pumps can lift water up to 25 feet, while deep well jet pumps can lift over 160 feet.
🧩 The jet ejector is the key component that allows the jet pump to lift water from deeper wells.
🏞 A shallow well ejector is mounted in the pump, while a deep well ejector is installed inside the well.
🔄 In a deep well setup, the system uses a two-pipe configuration: one for lifting water and another for returning water.
⚙️ Convertible jet pumps can be used for both shallow and deep well setups by adjusting the jet ejector.
🛠 Jet ejectors must be carefully matched to the pump and well system for optimal performance.
📹 Future videos will cover how to properly size jet ejectors for different applications.

Q & A

What is a jet pump and where is it commonly used?
-A jet pump is a type of pump mounted above ground that lifts water out of the ground or a body of water through a suction pipe. It is commonly used in residential and light commercial irrigation, home water supply, and pressure boosting applications, particularly in warmer climates and areas with a high water table.
What determines whether a shallow or deep well jet pump is required?
-The depth to water determines which type of jet pump to use. Shallow well jet pumps are suitable for lifting water from depths up to 25 feet, while deep well jet pumps can lift water from depths over 160 feet.
How does a jet pump work?
-A jet pump works by creating suction through a component called a jet ejector. Water passes through a jet nozzle at high pressure, increasing its velocity while reducing pressure, which creates suction. This suction helps lift water from the well or water source.
What is a jet ejector, and how does it function in a jet pump?
-A jet ejector consists of a carefully matched nozzle and venturi. Water is sent through the nozzle at high pressure, increasing velocity while reducing pressure. This creates suction around the nozzle, drawing in water and helping lift it to the surface.
What are the limitations of shallow well jet pumps?
-Shallow well jet pumps can lift water from up to 25 feet, with some setups extending that to 28 feet. However, as the distance from the pump to the water level increases, the capacity decreases since more water is required to feed the jet ejector.
How does the ejector configuration differ between shallow and deep well jet pumps?
-In shallow well setups, the ejector is mounted in the pump, in front of the impeller, which increases suction. In deep well setups, the ejector is located underwater, and a two-pipe system is used to transport water to the pump.
What role does the two-pipe system play in a deep well jet pump?
-In deep well jet pumps, the two-pipe system allows pressurized water to be sent down to the ejector, which then reroutes and returns water along with additional supply from the well. One pipe brings water up, while a smaller return pipe circulates water back down to the ejector.
What is a convertible jet pump?
-A convertible jet pump is one that can be configured for both shallow and deep well applications. The jet ejector can be installed in different configurations based on the well depth.
Why is it important to carefully match jet ejectors to the pump and system?
-Jet ejectors must be carefully engineered and matched to the specific pump and system needs. A mismatched jet ejector can lead to inefficient operation and reduced water lifting capacity.
How can someone get help selecting the right jet pump?
-For help selecting the right jet pump, viewers are encouraged to check out links provided in the video description or reach out through comments or phone calls for personalized advice.

Outlines

00:00

💧 Introduction to Jet Pumps

In this segment, the speaker introduces jet pumps, explaining their importance in areas with warmer climates and high water tables. Jet pumps are above-ground pumps that draw water through a suction pipe, making them popular for residential, commercial irrigation, home water supply, and pressure boosting. The speaker explains that the depth to water determines whether to use a shallow or deep well jet pump.

🚿 How Jet Pumps Work and Their Limitations

This part focuses on how jet pumps work. Shallow well jet pumps lift water from up to 25 feet, while deep well jet pumps can reach over 160 feet. The explanation introduces the concept of a jet ejector, a component that enables these pumps to reach such depths. The discussion also touches on centrifugal pumps, noting that they are limited to about 20 feet without a jet ejector.

🔧 Understanding Jet Ejectors

Here, the speaker dives deeper into the functionality of jet ejectors, comparing the effect to covering the nozzle of a garden hose—speed increases, but pressure decreases. The low pressure around the nozzle tip causes suction to draw more water into the stream. This principle helps increase the efficiency of the pump, especially when harvesting water from deeper levels.

🏞 Shallow Well Jet Pumps

This section explains the workings of shallow well jet pumps, where the ejector is placed in front of the impeller to increase suction. The distance from the pump to the water source is discussed, with the limitation of reaching a maximum depth of about 28 feet. The speaker also notes that the amount of water needed to feed the ejector impacts the pump's discharge flow, decreasing capacity as distance increases.

🌊 Deep Well Jet Pumps

In this paragraph, the deep well jet pump system is explained. Here, the ejector is placed under water in the well, sending pressurized water through the ejector to return additional water to the surface. A two-pipe system is used to pump water from deep wells, with a clear distinction between the supply and return lines. The explanation covers convertible jet pumps, which can switch between deep and shallow configurations.

🛠 Jet Ejector Parts and Customization

The speaker showcases two types of jet ejectors: a deep well ejector and a shallow well ejector. Convertible jet pumps, which can be used for both deep and shallow wells, are also introduced. However, the speaker emphasizes that jet ejectors need to be carefully matched to the pump's specifications to ensure compatibility and efficiency.

🔍 Conclusion and Future Topics

In the closing remarks, the speaker summarizes the key points about jet pumps, including their types and how they work. The audience is encouraged to watch for a future video on sizing jet ejectors. Viewers are also invited to ask questions in the comments or contact the team directly. Finally, a call to action is made to like and subscribe for more related content.

Mindmap

Keywords

💡Jet Pump

A jet pump is a type of pump mounted above ground that is used to lift water from the ground or a water body using a suction pipe. It is commonly used in residential and light commercial irrigation, home water supply, and pressure boosting applications. The video explains how jet pumps are designed for either shallow or deep wells, depending on the water table and distance to water.

💡Shallow Well

A shallow well is a well where the water level is relatively close to the surface, typically within 25 feet. Jet pumps designed for shallow wells can lift water from these depths, utilizing an ejector mounted in the pump in front of the impeller. This setup helps increase suction, enabling the pump to draw water effectively from shallow sources.

💡Deep Well

A deep well refers to wells where the water is more than 25 feet below the surface, often requiring specialized pumps. Deep well jet pumps can lift water from over 160 feet deep, using a two-pipe system and an ejector kit located underwater. The video explains how the pump sends pressurized water down to the ejector, which lifts the water to a level where the pump can bring it to the surface.

💡Ejector Kit

An ejector kit is a key component of a jet pump that consists of a nozzle and venturi. It enables the pump to lift water by creating suction. The video explains how the kit works by increasing water velocity while lowering pressure, which draws water into the pump system. Ejector kits are essential for both shallow and deep well applications.

💡Nozzle

The nozzle in a jet pump ejector kit receives water at high pressure and increases its velocity while reducing pressure. This process, similar to holding your thumb over a garden hose, helps create suction. The video describes how this increased velocity enables the jet pump to draw water from greater depths.

💡Venturi

The venturi is a part of the ejector kit that works with the nozzle to increase water speed and lower pressure. It helps create the suction necessary for lifting water in jet pumps. In the video, the venturi is described as an integral part of the ejector system, which is crucial for deep well applications.

💡Suction

Suction is the process by which a jet pump draws water from a source, aided by the ejector kit. The video explains how the nozzle and venturi increase water speed while decreasing pressure, generating suction to lift water from wells. Suction is a critical function in both shallow and deep well jet pumps.

💡Convertible Jet Pump

A convertible jet pump is a type of pump that can be used in either shallow or deep well configurations, depending on how the ejector is installed. The video shows examples of convertible jet pumps, which have a two-inlet configuration for handling different water sources and depths.

💡Two-Pipe System

The two-pipe system is used in deep well jet pump configurations. One pipe carries pressurized water down to the ejector, while the other pipe returns water to the pump. This system allows the pump to lift water from greater depths, as explained in the video, making it essential for deep well applications.

💡Pressure Boosting

Pressure boosting refers to the process of increasing water pressure in a system, a common use of jet pumps. The video mentions that jet pumps are often employed in residential and commercial settings to boost water pressure for irrigation and home water supply systems, ensuring adequate water flow at various points.

Highlights

Jet pumps are popular in areas with warmer climates and a high water table.

Jet pumps are mounted above ground and lift water through a suction pipe.

Jet pumps are typically used for residential and light commercial irrigation, home water supply, and pressure boosting.

The depth to water determines whether to choose a shallow well or deep well jet pump.

Shallow well jet pumps can lift water from up to 25 feet.

Deep well jet pumps can lift water from over 160 feet.

Jet pumps use a component called a jet ejector to lift water from deep wells.

Jet ejectors consist of a nozzle and venturi, increasing water velocity while reducing pressure.

Jet pumps convert pressure into velocity, allowing water to travel farther, similar to placing a thumb over a garden hose.

For shallow wells, the jet ejector is mounted in the pump before the impeller to increase suction.

Shallow well jet ejector setups can lift water up to 28 feet.

As the distance from the pump to the water level increases, the discharge flow decreases.

In deep well configurations, the ejector kit is placed underwater and uses a two-pipe system.

Convertible jet pumps can be configured for both shallow and deep wells using specialized jet ejectors.

Ejectors must be carefully matched to the pump and system requirements for optimal performance.