Pumps & Systems, September 2007Why question the PLC? For many, questioning the application of a PLC to the pump station panel is surprising. After all, the pump station panel was once controlled...
Pumps & Systems, September 2008Ensuring your sodium hypochlorite chemical feed system is properly set up and maintained is crucial to effective operation. Failure to address certain issues will...
Part Two Part Three This discussion opens a three-part series covering mechanical seal piping plans that provide guidelines for various seal arrangements, fluids and control equipment to help you...
Part One Part Two Conclusion of our series covering applications in which they are used, why they are used, how they fail and things operators can check/do to maintain the performance of the seal...
Part One Part Three Plan 12 Plan 12 is similar to a Plan 11. The flush is taken off of the pump discharge, or and intermediate stage in the case of multiple stage pumps, through a strainer or...
Pumps & Systems, April 2007 You have probably noticed that there are several camps out there when it comes to centrifugal pump applications involving variable frequency drives (VFDs). One...
Pumps & Systems, February 2009When the City of Delaware, Ohio, expanded its wastewater treatment plant, it looked to increase more than just capacity. It also wanted to increase its efficiency and...
Pumps and Systems, June 2009Adjustable Frequency Drive Application and UseIn the early days of adjustable frequency drive (AFD) technology, the typical application was in process control for...
Efficiency Through Indirect Measures
Indirect factors can directly impact the true efficiency of the product-transfer process, if not considered and monitored.For months, the focus of the Pumps & Systems "Efficiency Matters" column...
Pumps & Systems, October 2008Low efficiency, high radial loads, noise and vibration become a real problem when pumps operate to the left of the best efficiency point (BEP). Damage to the seal,...
Using ESP systems for artificial lift
Energy Savings through Pump Refurbishment and Coatings
Responsible for supplying an average of 60 million gallons of drinking water each day, the Monroe County Water Authority (MCWA) in Rochester, N.Y., depends on more than 100 centrifugal pumps with a...
A crucial triumvirate for improving the bottom lineA little more than 10 years ago, the U.S. Department of Energy's Office of Industrial Technology issued a report titled U.S. Industrial Motor Systems...
HI Pump FAQS
Q. How carefully must pump impellers be balanced to avoid unacceptable vibration levels when the pump is running?A. Pump impellers are typically balanced in accordance with ISO 1940 balance quality...
High Tech Tools for Greener Pumps and Pump Systems
A green product means different things to different people. For some, a green product is alternatively powered, such as some of the recently introduced solar-powered well pumps. For others, green...
Holistic Pump System Designs
Holistic pump system designs optimize system efficiency and life cycle performance.A pump system that is well-designed not only maximizes overall system efficiency, it can also be adapted to changing...
Pumps & Systems, May 2007If you are new to the pump arena, you may be a bit taken back by the number of pump models offered by various pump manufacturers. When you take a look at their performance...
Pumps & Systems, March 2008Few would dispute that variable frequency drives (VFDs) save energy, but the exact amount depends on the system. Hydraulically speaking, the main difference between a...
Hydraulic Institute Pump FAQs June 2011
Q. When purchasing rotodynamic (centrifugal or vertical) pumps, how can we estimate if the efficiency of the proposed design is the best to be expected for our application?A. The Hydraulic Institute...
Hydraulic Institute Pump FAQs March 2009
Q. How can we tell if a pumping system is designed and operated properly? Some problems such as leaking seals are obvious, but should we watch for any other symptoms?A. A few symptoms in pumping...
Hydraulic Institute Pumps FAQs June 2010
Balancing Pump Impellers; High Efficiency Pumps; Boiler Feed Booster PumpsA. Pump impellers are typically balanced in accordance with ISO 1940 balance quality grade G6.3 or better (see Figure B.2)....
Editor's Note: This is part two of a two part series about the 'commandments' of increasing pump reliability and life.Last month, we discussed Commandment 11, Thou shalt always operate...
Ever-evolving systems to reduce risk and add to the bottom lineThere is little argument that intelligent pumps have significantly improved fluid handling applications in a wide variety of industries...
The Challenge"Inaction is the riskiest response to the uncertainties of an economic crisis. But rash or scattershot action can be nearly as damaging."So begins "Seize Advantage in a Downturn,"...
Centrifugal pumps need to be kept in tip-top condition to handle harsh liquid-terminal operations.Without question, liquid storage terminals play an integral role in the ongoing success and relevance...
Meeting Increased Demand for Efficient Pump Designs
While turbo pumps cover the full range of specific speeds, the overwhelming majority run at low specific speeds and are comprised of an inlet pipe or duct, an impeller and an exit volute. Recent...
Reducing the causes of friction and choosing the proper pump will increase efficiency and cost-savings.Imagine a major-league pitcher standing on the mound. He looks for the signal, nods in agreement,...
Green Motors Save GreenbacksPrepare for the new motor manufacturing changes with the Energy Independence and Security Act of 2007.The U.S. has not enacted a wide-reaching, industrial energy efficiency...
Not All ANSI Pumps Are Created Equal
OEM pumps and parts outperform replicated products, and can save thousands per year in operating costs. Industrial process managers who purchase and maintain pumps are familiar with a marketing...
Pumps & Systems, May 2008 While complete packaged gas and dry chemical feed systems have been in the water treatment industry for many years, liquid metering pump packaged systems are relatively...