Metering Pumps Articles

  • Controlling the Flow Capacity of a Metering Pump

    Since a metering pump is usually a positive displacement pump there are two possible ways of controlling the flow capacity. The first one is by adjusting the volume of liquid displaced per stroke of the pump and the second is by adjusting the speed of the strokes. I. Stroke Length – control the displacement volume per stroke II. Speed of Strokes per minute Stroke Length ...


    By Aquflow

  • Xylem facilities, pumps ready for DOE compliance

    Bell & Gossett is nation’s only pump brand to meet efficiency requirements 3+ years early Xylem Inc. brand Bell & Gossett announces its e-Series line of products achieves and exceeds efficiency targets for clean-water pumps set forth by the U.S. Department of Energy, more than three years in advance of the 2020 compliance date. In addition, ...

  • Viscous Pumping in Focus

    The performance of a pump is influenced when it handles viscous fluids such as crude oil. For the configuration and design of pumps, this is key. In the industry, pump performance curves are developed by testing with water at temperatures around 25°C and corrected to a specific gravity of one. Engineers use this standard so that they have comparable measurement values around the ...


    By Sulzer

  • Sizing and Selecting the Proper Metering Pump: Part 1 of 2

    A typical agriculture or process application can consume large amounts of chemicals during daily operations. While the volumes may be large, though, they must also be very precise, with exact amounts delivered according to strict injection schedules. The pressures—from very high to very low—that the chemicals are injected at must also be governed precisely. This demand for ...


    By Modern Pumping Today

  • Act now to beat EU changes to wastewater treatment regulations

    Introduction Over the past few months, signals have been emanating from Brussels that hint at tighter wastewater treatment regulations. For instance, not only has Carlos Moedas, EU Commissioner for Research, Science and Innovation, recently been calling for better treatment systems for wastewater, but former Environment Minister, Janez Potočnik, has backed ...

  • Verderflex Dura Hose Pump Replaces Troubled Diaphragm Metering Pump

    The Challenge A water treatment plant in the US state of Georgia uses several wells to provide its residents and industries with fresh water. Each well site had to be equipped with the appropriate treatment equipment to ensure that the water meets and exceeds regulatory requirements. One such well site used a diaphragm-style reciprocating metering pump to pump lime slurry directly ...

  • What You Need to Know about Electronic Automation of Hydraulically-operated, Diaphragm-actuated Control Valves

    Hydraulically controlled, diaphragm-actuated control valves are the mainstay of the waterworks industry to control pressure, flow, level, pump control, and at times to meter. These automatic control valves are controlled by pilots to do specific tasks and are mainly single-set-point systems. With the need to remotely actuate and control the valves and the applications becoming more complex, ...


    By IWA Publishing

  • Practical Buying Guide When You Need Rotary Kiln From kefan

    Rotary kiln for sale is to point to rotating calcining kiln, is a kind of mining machinery widely used in building material, metallurgy, chemical, environmental protection and many other production industry. Often do mechanically, physical or chemical processing of solid materials. At present, there are many rotary kiln ...

  • Magnetic driven pumps in Molten sulphur service case study

    MD51EFDKR-3U88/06C with NORD SK12XZ-140TC and Reliance 2 HP, TEFC-XE motor Pumping Molten Sulphur is most challenging. Sulphur temperatures must be controlled within a 120-155o C range. Outside this temperature sulphur solidifies. Sulphur has a distinct odour and is highly corrosive in the presence of moisture. Where leakage from common packed style pumps was unacceptable, a ROTAN ...


    By DESMI A/S

  • Purifying wastewater with Peristaltic Industrial Tube Pumps

    The Challenge A leading multi-national electronics company with numerous plants across South Korea has for many years been using Metering pumps for dosing Aluminium Sulphate in their wastewater treatment facilities. The plant engineers approached the local Verderflex distributor Dong-Il Ent Co Ltd, looking for a solution to the following problems ...

  • Qdos metering pumps selected by Russian automotive plant

    After a comprehensive evaluation and trial period, the Russian plant of steel wheel manufacturer, Mefro Wheels, has opted to use the latest Qdos 30 metering pumps from Watson-Marlow Fluid Technology Group at its facility in Togliatti. Selected ahead of diaphragm metering pumps, the Qdos 30 pumps have been fully integrated into a complex process control system at the plant’s ...

  • Is your metering diaphragm pump having self-priming problems?

    Dosing sodium hypochlorite, fluoride, and alum There is a simple and 100% interchangeable alternative to solve your problems. Same footprint as competing diaphragm pumps. All ancillaries reused Mounting shelf Platform All suction and discharge piping Appurtenances like gauges and valves ...

  • Pump metering wastewater chemicals operationally effective and cost efficient

    Pumps are the heart of wastewater treatment systems and pump metering chemicals is critically imperative to required wastewater treatment! Different types of pumps are designed for unique wastewater treatment pump applications. Centrifugal pumps are used for general wastewater pumping. Positive Displacement pumps are used for pumping heavier solids. Chemical Metering Pumps are used for pump ...

  • Pumps in lubricant production

    A major business segment at Hermann Bantleon GmbH is the development, production, and sales of lubricants. At its plant in Ulm, Germany, this company starts with high-quality base oils and produces both universal and customized lubricants according to its own formulas. Customized products are often the best way to meet special requirements in cutting and non-cutting production processes. They can ...


    By ALLWEILER GmbH

  • Electronic water treatment reduces fouling in heat exchangers

    The deposition of material on heat transfer surfaces is called fouling which significantly impacts on the thermal and mechanical performance of heat exchangers. Fouling increases the overall thermal resistance and lowers the overall heat transfer coefficient of heat exchangers as well as impeding fluid flow, accelerating corrosion and increasing pressure drop across the heat ...

  • Qdos metering pumps usurp diaphragm models

    The revolutionary new Qdos 30 metering pump from Watson-Marlow Fluid Technology Group is proving a resounding success in Barrie, Canada. Located in southern Ontario on the western shore of Lake Simcoe, Barrie is a modestly sized city (135,000 residents) but one with a track record for quality when it comes to its potable water supply. Here, the Water Operations Branch of the Corporation of the ...

  • Qdos metering pumps usurp diaphragm models in potable water application

    The revolutionary new Qdos 30 metering pump from Watson-Marlow Fluid Technology Group is proving a resounding success in Barrie, Canada. Located in southern Ontario on the western shore of Lake Simcoe, Barrie is a modestly sized city (135,000 residents) but one with a track record for quality when it comes to its potable water supply. Here, the Water Operations Branch of the Corporation of the ...

  • APEX – Peak performance from the market leading hose pump manufacturer

    Decades of experience and knowledge have combined with closely scrutinised customer feedback to deliver APEX, three new hose pumps from Bredel, part of the Watson-Marlow Fluid Technology Group. Designed to suit all dosing, metering and transfer applications from 2.8 to 1,200 litre/hour across a broad range of applications, the new APEX pumps are now the first choice for processing plants the ...

  • AquFlow (formerly Hydroflo) metering pump helps make fireproofing system a success

    Problem: Part of developing innovative technology is making its application as easy for the user as possible. So when W.R.Grace&Co.-Conn. went to market with an accelerator for its Monokote family of fireproofing products, a key priority was making the system user-friendly. The accelerator can save users money because it makes the product more efficient to apply and increases ...

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