Hydraulic Institute answers pump questions.
Topic Sponsor
Top Pumps Articles
Pumps & Systems , May 2008
In trench-type wet wells, the pump intakes are placed near the bottom of a deep, narrow trench coaxial with the inlet pipe but considerably below it (see Figure 1). The closely confining walls of the trench prevent cross currents, which creates a good hydraulic environment for the pump intakes. The trench works very well for both water and wastewater. The ramp shown in Figure 1 is omitted in clear water applications, and the row of pumps starts immediately downstream from the end of the inlet pipe. Pumping stations with capacities in the range of as little as 2.5-Mgal/d to as much as 220-Mgal/d for both water and wastewater are currently in service and performing well. Some of these installations are more than 40 years old with no indication of poor or unacceptable pump performance.
The reliability of this pumping station had to be improved to keep up with demand and prevent service outage.
"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.
Early centrifugal pump design was heavily influenced by turbine technology during the mid to late 1800s. pump system optimization,pump efficiency
A low-pressure wastewater disposal alternative offers a cost-saving installation solution for wastewater and raw sewage disposal.
Potential vertical turbine pump vibration problems were avoided through design-stage finite element analysis.
Pumps & Systems , July 2008
Air operated double diaphragm pumps (AODDP) require the correct amount of pressure (PSI, pounds per square inch) and air (CFM, cubic feet per minute) to deliver the proper amount of fluid. A typical air operated diaphragm curve shows how the correct amount of pressure and CFM are required to deliver a required flow rate against a discharge head.
Many times, you may be faced with the decision to use a reciprocating pump or a multi-stage centrifugal pump for a given application.
Pumps & Systems , July 2008
Plastic is one of the most widely used materials in the manufacturing of everyday products, including food containers, toys, computers, medical equipment, building materials, household products, tools and the pipes that carry the water in our homes. We take plastic for granted, but most people know little about how it is produced. There are many different types of plastics and just as many processes for making them.
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.
Industry News
Columns and Blogs
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.
