An end suction pump, also called a transfer pump, is a type of centrifugal pump that has an axial suction and a 90-degree discharge. In order to comply with worldwide or regional standards, many designs have a center line discharge.
There are two types of end-suction centrifugal pumps: long coupled (separate coupling & motor) and close coupled (motor and pump are housed together) known as Monoblocs. A dual volute is usually found on larger end-suction pumps to reduce the force acting on the impeller, motor, shaft, and bearings.
In general, end suction pumps are single-stage pumps made of cast iron, bronze or stainless steel.
In most cases, the end suction pump is a back pull-out pump with a spacer coupling that facilitates maintenance without affecting alignment. It saves space and eliminates the need to align motors.
Frequently Asked Questions
What are the common applications of end suction pumps?
Some common applications of end suction pumps are the transfer or circulation of low-velocity liquids, solids handling, slurries, and chemicals.
What are the best piping practices for end suction pumps?
Air pockets should be eliminated by arranging the piping in such a way as to allow easy flow into the suction. Otherwise, they should be equipped with suction diffusers.