When to use a vertical turbine pump?

Vertical turbine pumps, also known as vertical pumps, deep well pumps, or line shaft pumps, are centrifugal pumps designed to operate fully submerged in water. These pumps are engineered to move water from underground wells or reservoirs. Although they are primarily utilized in water applications, vertical turbine pumps are also available for various industries and purposes. Their vertical design makes them more practical compared to submersible systems, eliminating the risks associated with submerged motors.

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How Do They Work?

Vertical turbine pumps consist of a motor, discharge head, and at least one rotating impeller connected to a shaft that directs water into a diffuser casing known as a bowl. The operation begins when water enters the pump through a bell-shaped component called the suction bell. The water then moves into the first stage impeller, increasing its velocity. Following this, the water enters the bowl above the impeller, where the high-velocity energy converts into high pressure. The bowl directs the fluid to the next impeller, continuing this process through all pump stages. After exiting the final diffuser bowl, water ascends through a vertical column pipe towards the surface. The motor is positioned above ground and is linked through a long vertical shaft to the impellers at the pump’s base. This shaft rotates, supported by sleeve bearings mounted inside the column and lubricated by the water flow. At the surface, the pump discharge head allows fluid flow to change direction towards the discharge pipe.

Where Are They Best Used?

Vertical turbine pumps find common application in wells for irrigation and in municipalities that depend on groundwater instead of surface water. These pumps are preferred when submersible pumps are unsuitable due to high flow rates or when a top-mounted motor is advantageous. Typically, they are multistage pumps with multiple impeller levels contained within a bowl assembly, classified as deep well or short set pumps.

What Are the Advantages of Vertical Turbine Pumps?

Vertical turbine pumps offer numerous advantages, making them suitable for various industries. Since the motor is above ground, repairs and replacements can be executed without dismantling the entire pump assembly. The choice of drive motors can be more flexible, including both gas and electric options. These pumps can efficiently draw water from open sources such as reservoirs, rivers, or intake structures. They are also customizable and excel in high-head, low-flow conditions.

Floway® vertical turbine pumps, part of our legacy brand, are meticulously engineered and come with unique service and support throughout your operational lifespan. Regardless of your industry, our dedicated Trillium Flow Technologies team ensures your success, instilling confidence project after project. We provide guidance, responsive solutions, and long-term strategies to optimize your efficiency and resources.

If you’re designing a pump system for drinking water, selecting the appropriate pump is critical. In certain cases, a vertical turbine pump may be the best choice. So, what is a vertical turbine pump, and how does it function? Read on for essential information.

What Is a Vertical Turbine Pump?

A vertical turbine pump is a specialized centrifugal pump designed to transport water from deep underground sources such as wells or reservoirs. Unlike a submersible pump, which operates underwater, a vertical turbine pump derives its power from a motor located above ground, linked by a vertical shaft to impellers below ground.

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These pumps are utilized when submersible pumps are impractical or when flow rates exceed turbine ranges. Common applications include agricultural irrigation wells and municipal systems relying on groundwater. Additional uses encompass plant makeup water and emergency fire water for industrial operations.

When selecting vertical turbine pumps, ensure that they are appropriately sized for the community's drinking water requirements. For high volumes of treated water, choose a high-service pump to meet demand.

How Do Vertical Turbine Pumps Work?

Typically, vertical turbine pumps are equipped with an AC electric motor or diesel engine and a right-angle drive. Below ground, there is generally one rotating impeller that directs water into a bowl or diffuser casing.

In multistage configurations, multiple impellers housed on the same shaft generate the higher pressure needed for deeper wells or scenarios requiring elevated pressure at the ground level.

The operation starts as water enters the pump through the suction bell, located at the bottom of the pump. At this stage, the water flows into the first impeller, which increases its velocity. The water then moves to the diffuser bowl, where the high-velocity energy converts into high pressure. The diffuser bowl allows the fluid to flow to the next impeller, continuing through all pump stages.

Once the water leaves the final diffuser bowl, it ascends through a long pipe toward the surface, passing through the well bore. This section of the pump features a spinning shaft supported by sleeve bushings inside the column. The flowing water lubricates the bushings, ultimately reaching the pump discharge head. As the water surfaces, the flow changes direction toward the discharge pipe, where it exits the pump.

Now that you understand what vertical turbine pumps are and how they operate, you can better determine if they are suitable for your water treatment facility. Contact Enviro-Line Co., Inc. for more information. We will guide you in selecting the right pumps and components for your specific treatment needs.

Categorized in: Vertical Turbine Pumps

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