Are Your Vertical Pumps Throwing Money Down The Drain?
Vertical pumps are a popular choice in the water industry because they provide many advantages. A vertical pump typically uses one-quarter of the floor space of a motor-driven horizontal pump. The...
 Cost Reductions Through Life Cycle Improvements
More than 15 years ago, a 160 in plate mill was experiencing significant maintenance problems with its descaling pumps; the typical mean time between repairs was only 6 to 8 months. Some rebuilt pumps...
Acceleration Head
The Thirteenth in a SeriesIf a centrifugal pump is started with the discharge valve open too far and with a low discharge pressure, the liquid in the suction line may accelerate at a rate that causes...
Babbit Bearing Repair for a Power Plant
Babbitt BearingsBabbitt bearings, frequently found in large steam turbines and generators in major power plants, can provide years of service if properly maintained. By using state-of-the-art...
Executive SummaryWhen assessing the vast chemical industry, it is usually not advisable to deal in generalities. However, as a base for the market's examination, Beth Beloof and Marianne Lines,...
How Can Packing Solve My Sealing Problem?
Do you have a large rotating drum that cannot keep a vacuum, or a pump that uses an exorbitant amount of water annually just to keep the packing operating satisfactorily? What about a problematic...
Maximizing Your Rental Experience
In many cases, users rent pumps to help them meet specific project requirements. The user does not always want to purchase a pump because he may not have the knowledge, manpower or time to service and...
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...
Retrolifting Lift Stations with Submersible Motors
In the February 2008 issue, we discussed various ways to lift water ("Lifting Water: What Are Your Pump Options?", Pumping Prescriptions). Starting with the 4,000-year-old Archimedes Screw, we touched...
Suction Calculators
Last month I reviewed an Excel-based Radial Thrust Calculator and showed how it can predict the magnitude of unbalanced radial thrust when a centrifugal pump is operated to the left of BEP. This month...
The ChallengeAt their simplest, metering pumps are used to inject liquids at precisely controlled, adjustable flow rates, which is a process called metering. As defined by the Hydraulic Institute's...
Hydraulic Institute Pump FAQs February 2010
Q. We have an application for pumps handling hot oil at 700 deg F. What special care should we take in selecting and installing such pumps? A. Pumps for handling oils within the range of 150 deg...