# What is the purpose of the strainer on a vertical shaft turbine pump?

## What is the purpose of the strainer on a vertical shaft turbine pump?

Vertical turbine pumps are comprised of a motor, discharge head, one or more flanged columns to house the shaft, and one or more bowls (or stages). It’s also recommended that a basket strainer is installed on the last bowl to prevent large solids from entering the pump.

How does a vertical turbine pump work?

Vertical turbine pumps work when water enters the pump at the bottom through a bell-shaped part called the suction bell. From there it moves into the first stage impeller, which raises the water’s velocity.

### What is difference between centrifugal and turbine pump why turbine pump use?

The primary difference between a centrifugal and a regenerative turbine pump is that fluid only travels through a centrifugal impeller once, while in a turbine, it takes many trips through the vanes.

What is impeller clearance?

In these impellers, it represents the clearance between vane tip and casing wall and has a considerable influence on the pump’s performance data. On axial impellers, the clearance gap width is usually designed to be 1 o/oo of the impeller diameter, with a minimum of 0.1 mm.

## Why it is called vertical turbine pump?

Vertical turbine pumps are centrifugal pumps specially designed to move water from an underground well or reservoir. They’re also known a deep well turbine pumps or a line shaft turbine pumps. From there it moves into the first stage impeller, which increases the water’s velocity.

How do you read a turbine pump curve?

To read the curve, find a point on the bottom horizontal axis, which represents GPM (Gallons per Minute). Draw an imaginary line from the 1GPM dash straight up to where the 1GPM line hits the pump curve.

### What is the difference between a vertical turbine pump and a centrifugal pump?

The primary difference between these two pumps is in the shape and position of the shaft. As the name implies, the horizontal centrifugal inline pump has a shaft that is placed horizontally. On the other hand, the vertical inline pump has a shaft that is positioned vertically.

How long do turbine pumps last?

A new vertical turbine cooling water pump should last 15 to 25 years between repairs if the water is relatively clean and if it is operated near BEP point, with few stops and starts. Eventually, however, internals wear out and vibrations increase. To prevent catastrophic failure, the pump must be pulled and repaired.

## How much clearance do you need between impeller and casing?

What happens if wear ring clearance is more than manufacturer’s recommendation?

Excessive clearances of rear wear rings can result in high axial thrust forces that can damage the thrust bearing.