Close-Coupled Pumps: Advantages and Limitations

2023-04-17 03:06:04 By : Mr. Andy Xie
Close-Coupled Centrifugal Pumps: Efficient and Cost-Effective Solutions for Small-Scale Applications

If you're looking for a reliable and cost-effective pump solution for small-scale applications, close-coupled centrifugal pumps are worth considering. These pumps are designed with a common motor and pump shaft or a motor shaft and pump shaft that are rigidly connected in a pump casing, making installation straightforward as the shafts and casings do not need to be aligned.
Close-coupled pump | KSB


Close-coupled pumps come with a bolted pump casing that is attached to the drive flange rather than installed on pump feet, making them ideal for small-scale applications that demand an efficient and easy-to-install pump solution. However, they are limited to relatively small pump power outputs due to the forces and moments in the pipelines that have to be absorbed by a motor housing with integrally cast or bolted-on feet.

An alternative to the close-coupled pump is the closely-related flanged motor pump, which is installed on pump feet rather than motor feet. A flanged motor pump can absorb larger pipeline forces and moments, allowing it to transfer larger amounts of power than a close-coupled pump.

Close-Coupled Centrifugal Pumps: Key Features and Benefits

1. Simple Installation

Close-coupled centrifugal pumps are ideal for small-scale applications where space is limited. These pumps come with a bolted pump casing that is attached to the drive flange, making installation quick and easy. The shafts and casings do not need to be aligned, which simplifies the installation process.

2. Cost-Effective

Close-coupled centrifugal pumps are a cost-effective solution for small-scale applications. Since the pump and motor are integrated into one unit, the construction is lightweight and compact, making them an affordable option.

3. High Efficiency

With their simple design, close-coupled centrifugal pumps operate with high efficiency, making them an excellent choice for applications that require high energy efficiency.

4. Easy Maintenance

Since close-coupled centrifugal pumps are designed with a simple construction, they also require minimal maintenance. In most cases, maintenance can be carried out by a simple replacement of the impeller, shaft seal, or bearings, ensuring that downtime is kept to a minimum.

5. Versatile Applications

Close-coupled centrifugal pumps are suitable for a wide range of applications, including water supply systems, food processing, HVAC systems, and agriculture. With their compact size and simple design, these pumps can be used in almost any application that requires the transfer of fluids.

In Conclusion

Close-coupled centrifugal pumps are a versatile and cost-effective solution for small-scale applications that require efficient and easy-to-install pumps. While they may be limited in terms of power outputs, their simple design, ease of maintenance, and high energy efficiency make them an excellent choice for a wide range of applications. So if you're looking for a reliable and cost-effective pump solution for your small-scale application, close-coupled centrifugal pumps are definitely worth considering.