Close Coupled Pumps
What is a close coupled pump?
A type of pump that involves an impeller as the central element of the motor component. The pump doesn’t have a separate coupling, and thus eliminate coupling alignment, one of the more expensive and time-consuming operations of pumps that aren’t close-coupled.
How do they work?
In a close coupled pump, the impeller is on the same shaft as the electric motor that drives the pump. The motor has a machined face on one end, which matches the face on the pump casing that is mounted against the motor face. The bearings that are in the motor must handle the forces generated by the pump, since it doesn’t have its own separate bearing housing.
What applications are they used?
The simplicity, versatility, and relatively low cost of this type of pump make them useful in many industries. They typically are used with relatively simple seals, so they are limited as to temperature and to relatively non corrosive liquids. Because the bearings are located in the motor, close couple pumps are limited in size to about 40-50 hp for most applications.
Centrifugal pumps can sometimes be noisy, perform poorly, break shafts, and cause other problems. This is often due to one of many pump suction conditions.
Incorrectly installed suction and discharge piping can create stresses on the pump casing and thus reducing the reliability of the seal and bearings. Read tips on how to eliminate this occurance.
Dr. Lev Nelik recommends some valuable steps you can take to extend the life of your pump and ensure its operating under optimum conditions.
Godwin Pumps provides 350 Dri-Prime pumps from eight of its East Coast branches to help with the clean up of Hurricane Irene.
National Pump and Compressor is now certified to provide goods and services to the federal government with its new GSA Schedule 56 contract. The pump company has placed its extensive line of industrial pumps on the General Services Administration's electronic ordering system, GSA Advantage.
ITT Corporation recently announced an agreement with Shell Global Solutions to provide the petroleum company's operations with centrifugal pumps. ITT's Goulds Pumps will supply American Petroleum Institute (API) pumps in several configurations to Shell operations and affiliates worldwide.
ITT Corp completes its acquisition of Blakers Pump Engineers. Blakers Pump Engineers is a long-time distributor of the Goulds Pumps brand in Australia. The company sells horizontal and vertical centrifugal pumps for the oil & gas, mining, water treatment, refining and other markets.
Fluid Dynamics, a division of Neptune Chemical Pump, announces that its dynaJET™ Dry Polymer Preparation technology can now be used in oil-and-gas production applications as a way of maximizing the recoverable resources found in mature wells.
According to a company press release, Jeff Wiemelt will assume the role of president for the Sundyne on January 1, 2012. Wiemelt previously held vice president and general manger of Sundyne Americas and Sundyne Dijon in France.