diaphragm sealing Articles

  • Hydroflo diaphragm pumps help reduce boiler corrosion and maintenance costs

    ABTCo, located in Alpena, Michigan, is a decorative wood paneling producer using three boilers to generate 7 MW of electricity – half the power needed in the plant plus steam for pulp processing. As in many boiler operations, the main enemy is corrosion, which can destroy system components and lead to boiler failure. Although internal boiler surfaces are protected by a film of magnetic ...

  • 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 ...

  • What is the difference between Rotary Vane and Diaphragm vacuum pumps?

    Most laboratories will have a vacuum pump. They are widely used across labs of all disciplines for a range of tasks from basic filtrations or evacuating a desiccator right up to use with large equipment such as vacuum ovens or rotary evaporators. The two most common types are rotary vane or diaphragm pumps – but ...


    By Camlab Limited

  • Top 5 Causes for AODD Pump Failure

    1.       Air Valve Stalling, Clogging or Leaking: Stalling of the air valve often has to do with the design of the airways inside the valve. If the design in less than optimal it will stall under certain conditions. Same can be said about leakage of air where the air mostly blows through the valve instead of being redirected to push the diaphragm. Clogging on the other hand ...


  • Flawless operation with the merlin pump from mono nov

    The Merlin progressing cavity pump underwent rigorous tests, alongside air diaphragm, gear and lobe pumps, toensure its suitability for the duty. The low speed Merlin pump has a gentle conveying action to ensure the integrity of the shear sensitive PVC coating. Vigorous action of the gear pumps created too much heat causing the PVC to solidify, and the air diaphragm pumps proved to be very energy ...


    By NOV Mono - Mono Pumps Ltd

  • The Generation of Pure Water

    As a world leading manufacturer of complex multi-port stainless steel diaphragm valves, GEMÜ has earned an excellent reputation in the biotech and pharmaceuticals’ markets. GEMÜ is now transferring the skills acquired in biotech and pharmaceutical applications, to water applications by designing and manufacturing plastic multi-port block valves. The space saving compact build, ...


    By Modern Pumping Today

  • Fully automatic prime/re-priming system handles air/liquid mixtures with ease

    Cornell’s Redi-Prime® system addresses the fundamental requirement of customers to have pumps that are easy to operate, re-prime under lift condition, and eliminate carry-over issues of liquids when priming the pump.  Repriming becomes important when entrainment (due to a snore condition) or vortexing occurs. The vacuum pump is always running, so when the liquid ...


    By Cornell Pump Company

  • Xenon saves brain cells

    A few years ago, the “Berliner Charité” medical school discovered that in addition to its application as an anaesthetic, the inert gas Xenon can also be used to stop the degeneration of brain cells following a stroke. As are the other inert gases (Helium, Neon, Argon and Krypton), Xenon is found in and makes up part of the air. Krypton and Xenon, however, are found in ...


    By sera GmbH

  • Deal With The Pressure - Protect piping system components with Pulsation Dampeners

    Metering pumps with operating pressures of up to 150 psig (pounds per square inch gauge) can create unwanted pressure pulsations within a piping system – a real problem in applications such as filling, mixing and spraying that require a combination of a metering pump’s accuracy and a continuous flow. But the issue can often be addressed with Pulsation Dampeners.The Pulsation Dampeners, usually ...


    By Lutz-JESCO America Corp.

  • 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

  • Chlor-Alkali Plants Industry - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • 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.

  • Importance of the Pre-charge of Pressure Tanks.

    A pressure tank consists of an air and water chamber that are divided by a membrane. The air in the air chamber is compressed dry air. This so called pre-charge is a very important factor in the operation of a system with a pressure tank. It acts like a spring and stores the energy in a tank that is used to supply pressurized water when the pump is not running. The membrane that separates the air ...

  • Replacement Fill Control Valves with Electronic Flow and Metering Improve Pressure, Stop Leakage and Prevent Valve Failures

    The City of Modesto, California is situated 90 miles east of San Francisco and has approximately 200,000 residents relying on 200,000 of gallons of water a day. The City needed to upgrade three water storage tanks that hold approximately 750,000 gallons each. After years of using motor operated valves to fill water storage tanks, the city recognized that there were just too many problems. ...


    By Singer Valve Inc.

  • Industrial Peristaltic Pumps reduce the cost of ownership for paper and packaging manufacturer

    Challenge A leading paper and packaging manufacturer in Australia was using Air-Operated Double Diaphragm (AODD) pumps to deliver 4-colour ink to its printers. The on-site AODD pumps were using considerable amounts of compressed air and required constant maintenance due to the wearable parts (seals and valves). This was resulting in unacceptable long downtimes and high cost: for repair and ...

  • Watson-Marlow peristaltic pumps in breakthrough application - Case Study

    South West Water is using a peristaltic pump from Watson-Marlow Fluid Technology Group for dosing coagulant into raw reservoir water for purification purposes. It is thought to be the first time peristaltic technology has been used on a coagulant application, certainly within the southwest region. Originally the plant, near Falmouth in Cornwall , employed two conventional ...

  • An inflatable plug works better than bypass pumping when closing off a 60-inch penstock

    When Brian Simon, a project manager at Grace-Titan DVBE (based in Redding, California) first looked at the Potter Valley Bypass job it looked difficult, but straightforward. Grace-Titan was being asked to remove a section of the penstock that supplies Pacific Gas & Electric's (PGE) Potter Valley hydroelectric plant and install a Y-branch. But that meant that the five-foot diameter penstock ...


    By Petersen Products Company

  • Standard quality valves available forcompressed gas and welding industry

    Small, medium or large scale industries all can be befitted with unique, innovative and premium quality valves provided by Evergreen Midwest Co. Other products includeregulators,fittings, adapters, cryogenic valves, transfer hoses and accessories. There are various kinds of valves available like the ammonia, CNG, Gate, chlorine valve, check packed, cylinder valves, ...


  • What Do You Know about Dry and Wet Types Rotary Kiln?

    The dry and wet types dry and wet types rotary kiln is not only important equipment in cement making production line, but also the heart of cement enterprise. We must use and maintenance for dry and wet types rotary kiln, and ensure the normal and the long-term safety operation. In view of equipment management, the straightness of dry and wet types rotary kiln centerline and the inclined Angleall ...


    By Fote Machinery

  • Whole Life Costs and pumping Technology – Peristaltics Increasingly Out on Top

    Untitled Document Whole life costs are playing an ever-more important role in pump selection by the water and wastewater industry. Interestingly, energy use is no longer the ...

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