Centrifugal Pumps

The Hydraulic Institute today announced plans to offer a new opportunity for engineering consultants and pump users to participate as “Standards Partners” beginning in 2007.

Since 1917, the Hydraulic Institute has worked as the largest association of pump industry manufacturers in North America. North American corporations, partnerships, sole proprietorships and government agencies that are engineering firms, provide engineering services, or are end-users of pumps are eligible to receive a valuable package of HI products and services.

The Institute is pleased to announce that Mechanical Solutions, Inc. (www.mechsol.com), a 25-person engineering research and consulting firm active in the pump compressor and turbine industries, is the first company to become an HI Standards Partner. The company performs analysis, testing, and troubleshooting services for OEMs and end-users.

“Being associated with the Hydraulic Institute is useful for a company that wants to be a significant pump industry player,” said Bill Marscher, President and Technical Director of Mechanical Solutions, Inc. “Through participation in the standard development discussion process, middle management and senior staff are able to contribute while being able to network with the engineers and CEOs who are the movers and shakers of the industry. The new ‘Standards Partner’ website links and consultants directory also provide substantial support to our future business growth.”

Source and more info: waterandwastewater

Pumps & Systems Magazine, the magazine for pump users worldwide, announces the release of PumpCalcs, a new set of basic and expert calculators for plant, engineering, and maintenance professionals.

Users can reach PumpCalcs through a link on the home page of the P&S website, www.pump-zone.com. There visitors will find a variety of basic and expert calculators for applications involving centrifugal pumps; positive displacement pumps; vibration; electrical; pressure, head, and flow; pump design; and vibration. The site also features a unit converter and financial calculators to compute future value and payback time.

Robert Perez, P&S Contributing Editor and PumpCalcs.com website editor, describes one way to use the site: “Pumps & Systems’ new website PumpCalcs.com offers users an Expert Calculator that takes typical pump specifications and provides key hydraulic parameters that are useful in the pump selection process. By simply inputting flow, pressures, rpm, specific gravity, number of stages, number of suction eyes, NPSHa, and desired NPSH margin, the Expert Calculator provides the specific speed (Ns) and suction specific speed (Nss) for an ideal pump.”

These calculators ultimately allow users to be the Pump Designer. “This pump analysis calculator enlightens and encourages users to better understand their pumps and select their pumps for the right reason,” notes Perez. “By thinking like a pump designer, they are better equipped to develop improved pump specification and talk to their pump suppliers with the goal of more accurate pump selection.”

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In 1971, engineers at Holland-based Bredel (now Watson-Marlow Bredel Pumps, the world leader in peristaltic pumps) were busy developing a machine to spray a cement mixture. When the time came to put a positive displacement pump in the new device to move the concrete, company engineers were underwhelmed by the choices in the marketplace. Consequently, the decision was made to internally create a brand new pump�one that could effectively pump the concrete through the machine and also tolerate the material�s abrasive properties. This revolutionary cement pump worked so well, it spawned new research and development at Bredel that ultimately yielded longer hose life, broader flow ranges, and greater chemical compatibility. It was not long before the hose pump transformed from a purpose-built cement pump into the technology it is today�a worldwide solution for pump users looking to increase productivity and minimize their life cycle costs when moving abrasive fluids.

When it comes to handling abrasive materials, hose pumps deliver a significant advantage from both a performance and financial perspective. Before we consider the issues inhe

Source and more info: publicworks

Amarinth has designed and commissioned an innovative pumping solution for Polimeri Europa which prevents the frequent clogging inherent in the existing centrifugal pumps used to move latex agglomerate around the plant. The new pumps have increased reliability by a factor of 15, delivering a return on investment in just nine months. Polimeri Europa is one of the major world producers of elastomers at their plants in Hythe and Grangemouth, United Kingdom.

Using a range of proprietary technologies and state-of-the-art production systems, the company produces basic chemicals, polyethylene, elastomers and styrenics for many of the world’s leading brands.

For years, the latex agglomerate used during production had tended to clog and accumulate behind the impellers of the existing centrifugal pumps.

This overloaded the pumps causing gland leakage.

Despite a regular maintenance schedule of stripping, cleaning and rebuilding the pumps and re-packing the glands, seizures would still occur each week, sometimes resulting in the failure of a shaft or bearings.

The consequence was unplanned downtime and disruption to critical stages of the production process.

Source and more info: processingtalk

The Thames Water effluent treatment works at Crawley uses nine Vogelsang positive displacement rotary lobe pumps to transfer primary sludge from settlement tanks to the next processing stage. Each pump is rated to pump 20 m3/h of sludge with approximately 2 m suction lift. These pumps were installed in 1988 so have been in operation now for over 18 years and the only down time has been for planned routine maintenance. There has been no break in service due to breakdowns or any underperformance issues.

For people not used to working in municipal effluent treatment, information about the duty these pumps perform may not mean very much, so we’ll now outline a ‘typical’ sewage treatment works scheme. Firstly the incoming sewage passes through a fine screen. This removes the larger items that people have flushed down toilets, or items which have found their way into the drains such as plastics and pieces of wood. These materials are then chopped up, put into skips and taken to landfill sites. (Thames Water has a campaign in place to encourage their customers not to put household rubbish down the drain.)

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Incorporating corrosion proof, self-priming, lightweight hard plastic design, Siphon King(TM) utility pump helps users remove water from hard to reach spaces such as irrigation valve boxes, pits, and pipe trenches. Featuring 36 or 76 in. flexible discharge tube, pump guides water away from work area and is also capable of evacuating water with 4 strokes/gal. Product contains removable intake foot to facilitate cleaning.

Source and more info: thomasnet

CombiChem pumps, which fully comply with ISO 5199, are ideally suited to handling low viscosity, clean or slightly contaminated fluids in the chemical and process industries.

The pumps offer a maximum capacity of 500 m3/hour, heads up to 160 metres, a working pressure up to 16 bar and the ability to pump fluids with a maximum temperature of 200°C.

The Johnson Pump Combi-system is a modular programme of single stage centrifugal pumps offering users a high degree of interchangeability of parts between the different pump constructions. In addition, a wide choice of body materials such as cast iron, bronze and stainless steel, a variety of shaft sealings and bearing construction options, ensures a versatile and reliable pump suitable for a wide range general industry applications.

Other features and benefits of CombiChem pumps include; optimum suction capabilities with minimal flow distortion, a large drain opening to enable fast draining of the casing, an optmised volute design with closed impeller and smooth surfaces ensuring high efficiency and minimal internal losses.

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Stan-Cor MK Series, comprised of ANSI centrifugal pumps, features hydraulically-balanced operation to reduce bearing failures by eliminating thrust loads. Able to handle harsh chemicals, pumps come in 3 sizes with 60 Hz operation at up to 3,500 rpm and 330 gpm or 50 Hz operation at up to 2,900 rpm and 62 M³/hr. Construction includes carbon fiber-filled Kynar pump casing as well as chemical-resistant, glass-filled case and flange supports.

Source and more info: thomasnet

Wastecorp Pumps(R) is pleased to announce the launch of its redesigned website www.wastecorp.com. The new wastecorp.com informs customers of Wastecorp’s growing line of customized pump products including plunger/piston, diaphragm, centrifugal, end suction, split- case, submersible, vertical sewage, circulation, in-line and more.

Wastecorp(R) is well known for its line of industry leading plunger pumps. The new wastecorp.com focuses on the entire breadth of the company’s fluid handling pumps. “From golf course irrigation professionals to municipal wastewater treatment plant operators, our customers demand products that suit custom pump applications,” says Marc Johnson, Technical Support Manager of Wastecorp Pumps. “The time is right, to show on-line users the exciting new fluid handling possibilities at Wastecorp. Pumps.”

Wastecorp’s pump brands include Mud-Sucker(R) Diaphragm Pumps, Trash Flow(R) Centrifugal Pumps, Turbo Flow(TM) high volume pumps and Wastecorp Plunger Pumps. The company serves the needs of water and wastewater treatment facilities, oil and petrochemical companies, food processing plants, marine, fire and disaster relief applications, pulp and paper, pharmaceutical, hotel water booster applications and more.

Source and more info: drugnewswire

With Australia’s drought worsening daily, the need to efficiently transport water is becoming more and more important. Jim Camilleri of Glenwood set up a 8,000 litre water cart designed to fulfil earth, work, dust suppression and water transfer duties in the most efficient way possible. The compact 8,000 litres steel tank fits snugly on the Hino cabin chassis with space for two Aussie self priming centrifugal pumps behind the cab.

John Camilleri is proud of the versatile Aussie two pump system that provides flow and pressure John Camilleri is proud of the versatile Aussie two pump system that provides flow and pressure
One pump, an Aussie Quik-Prime 4” gusher, loads and unloads the tanker at the rate of up to 1800 litres per minute. “That means I can unload and be back on the road again in about 5 to 6 minutes,” Camilleri says.

Source and more info: infolink