Closed Coupled pumps

Closed Coupled pumps for sale

What are Close-Coupled pumps?

Close-coupled pumps are usually classified by having a common motor and pump shaft. The motor and pump shaft can also be connected sturdily to the pump casing. Another characteristic is that the pump casing is fixed to the drive flange instead of being on pump feet. The advantage of this is straightforward installation because the shafts and casings need not be aligned.

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Close-coupled pumps are kept to small pump power outputs because the forces and movements in the pipelines have to be absorbed by a motor casing with cast-on or bolted-on feet. If the forces/vibrations become too much the pump could fail. Alternatively there closely-related flanged motor pumps; these pumps are installed on pump feet instead of motor feet. A flanged motor pump can handle more pipeline vibrations. Thereby, it is able to output more power than a close-coupled pump.

Visual comparison

A close couple pump is directly connected; pump and motor are reliant on one shaft
The opposite of a close coupled pump configuration is a flexible coupled pump. The motor and pump have their own shafts connected together.
Image result for flexible coupled pumps vs
Image result for flexible coupled pumps vs