Why use an OEM for centrifugal pump repairs?

Centrifugal pump OEMs claim they supply better components, service, response and worth than aftermarket service firms, but that isn’t at all times the case.
Until the early 1990s, OEM restore centers labored completely on their merchandise, espousing the mantra, “We know our products finest.” During the ‘90s, a decrease in new product sales triggered OEMs to change their story and boast that their shops might work on any model of centrifugal pump. Suddenly, their particular product information utilized to all centrifugal pumps.
According to the online journal, World Pumps, six of the most important U.S. centrifugal pump producers of the 1980s have been consolidated into one, Flowserve. Many U.S. legacy brands are still manufactured by Flowserve. During the various mergers and acquisitions, the U.S. Department of Justice forced the sale of some manufacturers to different manufacturers. Products have been disassociated from their designers.
Before the great consolidation, every OEM had a chief engineer and a number of other product designers who employed a holistic design process, which thought-about the entire product, the interaction of its varied parts, the user’s software and industry specifications. When a consumer had a major drawback, the chief engineer was called to type it out. The classes realized have been included into future designs and centrifugal pumps developed over a few years.
Industry standards, API 610 in particular, have been developed by users to simplify procurement of high quality gear and to enhance pump reliability. It is a compendium of users’ experiences, that are normally expensive experiences. spmk700 to common centrifugal pump design points and best-in-class design options.
Computers loaded with superb software have democratized engineering. When I was a design engineering supervisor at Pacific Pumps, I had physicists, mathematicians, metallurgists, engineers, drafters, document managers and a large team of individuals to create and distribute microfilm. In the early Eighties, we added a Fortran programmer to our staff. Today, that expertise and many ability sets are on my desktop. Integral calculus is finished with a click in MathCAD. Finite factor analysis of structures, stress vessels and even shaft keyways are built-in into our strong modelers. Hydraulic element design software program feeds computational fluid dynamics analysis packages, reducing hydraulic design threat. Rotordynamic evaluation software program coupled with structural evaluation instruments solves — and hopefully prevents — vibration points.
3D optical scanners and laser trackers present accurate models of advanced shapes. Conhagen can duplicate any pump case in a single afternoon and improve it by the subsequent week. It can produce a model new case or impeller casting in 5 – 6 weeks. The growth of patternless molds — 3D printed sand molds — was the game changer for Conhagen, yielding excessive constancy, reasonable value and quick supply in most any steel.
Conhagen has developed from a repair store to a manufacturer that designs new centrifugal pumps or modifies present pumps for specific functions. Unique designs provide the mandatory hydraulic performance and mechanical robustness to minimize the whole price of ownership. Two examples of case replacements are included on this editorial — a 4 stage, axial break up, boiler feed pump’s carbon steel case was replaced with a CA6NM casting. The second instance is a single stage between a bearings pump that suffered rotor dynamics points. Conhagen designed and manufactured a new case, shortening the gap between bearings from 37 3/4 inches to 30 5/8 inches.
Conhagen has been in business for eighty years. Its products include detailed engineering calculations, manufacturing drawings, installation, operation and maintenance manuals, a one-year operation warranty and help for administration of change reports. It is big enough to be responsible, yet sufficiently small to be responsive.

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