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Pumps & Systems , April 2007

Once upon a time, in power plant fuel oil transfer and injection services, it was difficult to justify replacing twin screw timed pumps when maintenance was already familiar with the equipment. Not anymore. Reengineered screw pumps have become drop-in replacements for twin screw timed pumps.

Non-metallic magnetic driven gear pump technology improves equipment life and maintenance costs for metering and transfer applications. Finding an efficient and economically feasible way to transfer and meter aggressive chemicals is a constant challenge in many industries ranging from chemical processing to food and beverage production to municipal water treatment. Limited maintenance resources and critical service demands put a premium on equipment uptime and extending MTBF (mean time between failures).

An RO system solved the problem of purifying brackish water.

Centrifugal pumps need to be kept in tip-top condition to handle harsh liquid-terminal operations.

The Jordan, Knauff & Company (JKC) pump and valve stock indices outperformed the broader S&P 500 Index. The JKC Valve Stock Index was up 37.9 percent over the last 12 months, above the broader S&P 500 Index, up 28.5 percent.

Valero-Wilmington, a midsize refinery (135-kb/d) located in Los Angeles, Calif., was experiencing problems with oil lubricated vertical in-line pumps (API type OH3).

In the June 2008 issue, we turned our attention from centrifugal to positive displacement pumps. This month, we explore progressive cavity (PC) pumps, which belong to a class of rotary positive displacement pumps.
New resin and Kevlar bulk molding compound adds strength to pump wear parts

Pumps and Systems, June 2009

Many troubleshooting guides and charts have been developed to help us understand the nature of pump failures. Although beneficial and well constructed, these handy guidelines focus on the physical cause of pump malfunctions and breakdowns.

What is the definition of specific speed, to what does it pertain and how is it used?

Latest Pumps Articles

New resin and Kevlar bulk molding compound adds strength to pump wear parts
Hydraulic Institute has been creating pump standards since 1917
Solid-body plastic AODD pumps deliver the operational ability required for challenging abrasive-handling applications.
Computer-aided engineering enables the improvement of pump hydraulic performance in power plants.
Detuning devices solve high vibration problems in power station water circulating pumps.
Choosing the right enclosure to protect pump monitoring equipment is paramount.
"So easy that even a caveman can do it,” as stated in a popular TV commercial, could easily be used to describe today’s predictive maintenance tools because they work so well.
Charlie Jackson was unaware of any centrifugal pump manufacturer that knew how to calculate hydraulic axial thrust produced within liquid ends of their pumps.
Standards for repair will begin with a standard for vertical turbine pumps.The pump industry is undergoing renewed interest in the technical aspects and quality of repairs.
The performance of a centrifugal pump with a trimmed impeller will follow the affinity laws as long as that trim is relatively small.

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The performance of a centrifugal pump with a trimmed impeller will follow the affinity laws as long as that trim is relatively small.
Standards for repair will begin with a standard for vertical turbine pumps.The pump industry is undergoing renewed interest in the technical aspects and quality of repairs.
Charlie Jackson was unaware of any centrifugal pump manufacturer that knew how to calculate hydraulic axial thrust produced within liquid ends of their pumps.
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