centrifugal pump Articles

  • Submersible Pumps vs. Self-Priming Centrifugal Pumps

    When selecting a centrifugal pump for bypass work, the first consideration should be NPSHR by the pump. Neglecting the NPSHR of the pump is the single most common mistake when choosing a self-priming or priming assisted pump. A function of the pump design requires part of the 33.9 ft (14.7 in.) available as further defined in this article. A centrifugal, and in a way submersibles, require part ...

  • Overview of Sanitary Pump

    Sanitary pumps involve the delivery of all human contact products such as pharmaceuticals, dairy products, beverages, food products, cosmetics, food additives, fine chemicals and the like. There are four types of sanitary, centrifugal, volumetric, jet and air pumps. Centrifugal pumps apply centrifugal force to create velocity, using a rotating wheel to increase speed and push fluid through the ...


    By Adamant Valves

  • Centrifuge Technology in Drilling Fluid Recycling

    Drilling fluid additives and the water that contains them are an essential part and expense of successfully completing a horizontal directional drilling (HDD) installation, and the longer the bore and larger the product being installed, the more drilling fluids cost. Therefore, it makes economic sense to recycle drilling fluids by removing cuttings and recirculating the cleaned ...


    By Elgin Separation Solutions

  • Sanitary Pump Application

    Sanitary pumps involve the delivery of all human contact products such as pharmaceuticals, dairy products, beverages, foodstuffs, cosmetics, food additives, fine chemicals and the like. There are four basic types of sanitary pumps, centrifugal, volumetric, jet and air. Centrifugal ...


    By Adamant Valves

  • VFD for pumping systems

    Pumping systems account for nearly 20% of the world's electrical energy usage. In some process plants, the VFD for pumps and fans together account for between 50% and 80% of the total electricity used. Very rarely have I come across pumps operating with fully open discharge valves. The same is the case for fans with dampers. ...


    By Variable Frequency Drives

  • Understanding Pump Cavitation

    Cavitation is a major problem in the chemical industry because it affects a basic tool, the centrifugal pump. A sudden increase in the velocity of the pumped liquid reduces the inlet pressure, sometimes below the vapor pressure.The result is formation of gas and bubbles. Detecting the signs of cavitation, and correctly identifying and understanding the type of cavitation present, can help an ...

  • Horsepower on the pump curve

    Now that the head capacity relationship along the X and Y axes of the pump curve has been established in Part 1 of this series, the pump curve can be used to determine the amount of horsepower required to meet the head and capacity requirements for the job. Horsepower is a unit of power equal to 550 foot pounds per second or 746 watts. Water horsepower is the minimum power ...

  • Pump Performance Checklist

    Keeping your pump in shape will help reduce costs and boost profits! Cut fuel consumption, reduce replacement parts costs and minimize pumping time on every job! A PUMP THAT LETS YOU DOWN when you need it most causes obvious losses of time and money. Not so obvious, but every bit as costly, are losses you can incur with pumps that operate at less-than-peak efficiency. A pump ...


    By Gorman-Rupp Co.

  • Pumping at Subzero Temperatures

    Pumping of cryogenic (low-temperature) products is important for many applications, especially in the field of liquefied natural gas (LNG). The Sulzer J-unit is a special sealing system for cryogenic pumps. It was invented more than 60 years ago. The evolution of the J-unit design since then has been impressive and has now resulted in a recently filed patent application by Sulzer. ...


    By Sulzer Ltd.

  • Picking the Perfect Pump

    By John Amundsen, District Manager The Gorman–Rupp Company Pumps and pumping systems are like unsung heroes of modern society – quickly and quietly transporting vital water supplies, chemicals and waste to and from locations, which rely upon their consistent, reliable operation. In fact, pumps and pumping systems are one of those entities that aren't ...


    By Gorman-Rupp Co.

  • The Versatility of Hydraulic Submersible Pumps

    Hydraulic submersible pumps offer flexibility and performance When determining a pump for an application, there are a number of factors to consider. Hydraulic submersible pumps are an option and give the added benefit of run dry capability, especially when electric powered pumps are of concern due to potential electrical hazards or other reasons, or diesel driven centrifugal pumps ...

  • BAIONI supply complete dewatering centrifuge system for APS Ltd

    Situated near Slough, in Berkshire, Aggregate Processing Solutions (APS) is operating a washing plant where Baioni has recently supplied a centrifuge system to complement the whole existing plant. Baioni has boosted the capacity of its decanter centrifuges range to pave the way for further improvements in waste ...


    By Baioni Crushing Plants Spa

  • Less and More : Why You Should Pump Slurries with a Peristaltic Pump

    LESS WATER Peristaltic Pumps Use Less Water Hose pumps can circulate slurry SGs of 1.6 to 1.8 or up to 80% solid content. The traditional centrifugal pump loses efficiency when the slurry SG reaches 1.3 or 30% solids. With this limitation, slurry pumps have significant process water demands : on a plant processing 70 tonnes of ore per hour, every time a hose pump replaces a ...

  • Peristaltic pumps for moving filtration water

    The Eversburg sewage treatment plant is designed to serve 250,000 population equivalents and is one of three plants operated by the city of Osnabrück in northern Germany. But in 2005, its actual load was closer to 309,000 population equivalents (COD 80 mg/l), pushing the nitrogen input level above the plant's capabilities. To deal with this situation, engineer Peter Sikora organized a team ...


    By ALLWEILER GmbH

  • Pumps are the heart of heat-transfer plants

    Manufacturers in a variety of industries depend on heat-transfer plants to heat or cool their machines and apparatus. German firm heat11 GmbH & Co. KG specializes in heat-transfer plants of virtually all types. The chemical industry uses their installations for controlling the temperature of reactors and during the production of color pigments and liquid crystals. In the plastics industry, ...


    By ALLWEILER GmbH

  • Pumps for energy-efficient water and wastewater treatment

    Multiphase pumps are unique products with outstanding features compared to conventional centrifugal pumps. The approach consists of using the pumps not only for transport of liquids but also for partial gas supply and as dynamic mixer for gas enrichment. Therefore this novel pump conception barely has something in common with a standard pump. Even the mode of ...

  • Field Performance Testing for Pipeline Pumps

    Significant energy savings can be achieved by optimizing pump operating efficiency. Measuring the exact pump performance with crude oil under realistic conditions in the field is the first step towards improving the pump efficiency in the future. About 20 billion barrels of crude oil were transported through pipelines in 2015. Around the world, there are over one million kilometers of ...


    By Sulzer Ltd.

  • Verderflex peristaltic pumps replaces mag drive pumps in water treatment - Case Study

    Verderflex provided a cost effective solution to a Swiss airport that had been experiencing significant problems with their water softening treatment. The local water supply required treatment to prevent scaling in the pipework.  The Challenge The existing treatment system required a salt solution to be dosed from a storage tank close to the pumps ...

  • High Quality Pumps for Den Breejen Shipyard

    Since 1947 Den Breejen Shipyard in the Netherlands has produced high-quality vessels like passenger vessels, ferries, container and dry cargo ships, tankers, work boats and pontoons. River cruise vessels and ferries are specialties of Den Breejen and many DESMI pumps are onboard. DESMI Pumps are used for the following applications: ...


    By DESMI A/S

  • Winter is coming: precautions to protect your pumps

    Now that we are running up to December, the weather in the Northern hemisphere is slowly getting colder and colder. Although Western Europe has been fortunate with a reasonably mild fall, we are expected to get a harsh winter this year, meaning that it is good to prepare for the cold season. Being pump people, this means that we need to take precautions to protect our equipment. This applies to ...


    By BBA Pumps North America

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