Why use an OEM for centrifugal pump repairs?

Centrifugal pump OEMs declare they supply better elements, service, response and value than aftermarket service corporations, however that isn’t all the time the case.
Until the early Nineteen Nineties, OEM repair facilities labored exclusively on their products, espousing the mantra, “We know our products finest.” During the ‘90s, a lower in new product gross sales caused OEMs to alter their story and boast that their shops may work on any model of centrifugal pump. Suddenly, their specific product information utilized to all centrifugal pumps.
According to the net magazine, World Pumps, six of the main U.S. centrifugal pump producers of the Eighties have been consolidated into one, Flowserve. Many U.S. legacy brands are still manufactured by Flowserve. During the many mergers and acquisitions, the united states Department of Justice pressured the sale of some brands to different manufacturers. Products had been disassociated from their designers.
Before the great consolidation, every OEM had a chief engineer and a quantity of other product designers who employed a holistic design process, which thought-about the entire product, the interplay of its various elements, the user’s software and business specifications. When a user had a big downside, the chief engineer was called to sort it out. The lessons discovered have been incorporated into future designs and centrifugal pumps evolved over many years.
Industry requirements, API 610 particularly, had been developed by users to simplify procurement of quality equipment and to improve pump reliability. It is a compendium of users’ experiences, which are often costly experiences. API 610 captures solutions to frequent centrifugal pump design issues and best-in-class design features.
Computers loaded with amazing software program have democratized engineering. When I was a design engineering manager at Pacific Pumps, I had physicists, mathematicians, metallurgists, engineers, drafters, doc managers and a large team of individuals to create and distribute microfilm. In the early Eighties, we added a Fortran programmer to our workers. Today, that expertise and many talent sets are on my desktop. Integral calculus is done with a click on in MathCAD. Finite factor evaluation of structures, strain vessels and even shaft keyways are integrated into our strong modelers. Hydraulic element design software program feeds computational fluid dynamics analysis packages, decreasing hydraulic design threat. Rotordynamic evaluation software program coupled with structural analysis instruments solves — and hopefully prevents — vibration points.
3D optical scanners and laser trackers provide accurate models of complicated shapes. Conhagen can duplicate any pump case in a single afternoon and enhance it by the next week. It can produce a brand new case or impeller casting in 5 – 6 weeks. The improvement of patternless molds — 3D printed sand molds — was the sport changer for Conhagen, yielding high constancy, affordable price and fast supply in most any metallic.
Conhagen has evolved from a restore shop to a producer that designs new centrifugal pumps or modifies present pumps for particular functions. Unique designs provide the mandatory hydraulic performance and mechanical robustness to reduce the entire price of ownership. Copy of case replacements are included on this editorial — a 4 stage, axial split, boiler feed pump’s carbon metal case was replaced with a CA6NM casting. The second example is a single stage between a bearings pump that suffered rotor dynamics points. Conhagen designed and manufactured a new case, shortening the space between bearings from 37 3/4 inches to 30 5/8 inches.
Conhagen has been in business for 80 years. Its merchandise embrace detailed engineering calculations, manufacturing drawings, installation, operation and maintenance manuals, a one-year operation guarantee and help for administration of change stories. It is big enough to be accountable, but small enough to be responsive.

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