positive displacement pump Articles

  • Losing system pressure - positive displacement pumps

    In a positive displacement pump, flow is directly related to RPM and pressure by the restriction of the flow in the discharge line. Once the system pressure is set, any change in flow will result in a change in pressure. These changes in flow can occur from certain conditions in the pump inlet line, the pump itself, the pump drive or in the pump discharge line. Pump Inlet The ...


    By Cat Pumps

  • Some Chemical Applications Require the Range of a Positive Displacement Pump

    Chemical manufacturing includes complex processes. In fact, chemical manufacturing processes are so intricate that, typically, several unit operations exist within an overall process. These may include cracking, distillation and evaporation, gas absorption, and scrubbing and solvent extraction. Within these operations, transferring is the process of transporting fluid from one point to ...


    By MOUVEX

  • Power Positive Resource Recovery

    Using laws of thermodynamic analysis to evaluate the energy and power characteristics of wastewater and beneficial uses of biogas offers greater insight into best business practices and what is achievable. Growing numbers of waste-water treatment plants (WWTP) are striving to produce more power onsite. In recent years, there’s even been a race among WWTP operators to see who can ...


    By BioCycle Magazine

  • Pump Protection - unattended operation in sludge pumping

    Pulsar's 500 series non-invasive flow switches are used to great effect in this application, protecting sludge pumps and allowing unattended operation. Pulsar’s Pulsarguard 500 units are used by Whale Tankers to ensure that their specialist positive displacement pumps never run dry. By employing the Pulsarguard unit, staff are able to allow the pumps to operate unattended, confident that there ...

  • Piston Diaphragm Pump

    Piston Diaphragm Pump Emmerich’s competitors technologically speaking are Abel, Feluwa, and Geho. Each manufacturer have slight differences which we taunt, but in reality they are all excellent pumps. After working with my first Feluwa pump in 1976 feeding a filter press at Sperry Univac in Salt Lake City, I realized that piston ...

  • The small pumps with a big attitude

    Cardev International Ltd supplies a comprehensive range of environmental products commonly used in the maintenance and on-site recycling of industrial cutting fluids and oils, particularly hydraulic and turbine oils. Cardev’s standard range of OSCAR rigs incorporate several sizes of Mono M range pumps, including 110 volt systems for industrial recycling, and 24 volt systems mounted on the back of ...


    By NOV Mono - Mono Pumps Ltd

  • Selecting a pump for sea water reverse osmosis

    Reverse osmosis (RO) desalination has become a significant process used in the purification of water. Selecting the correct pump is a significant step in a well designed and properly operating pumping system. Although the pump is a relatively small part of the overall cost of an RO system, expenses resulting from downtime and inefficiency can quickly diminish the productivity of the RO system and ...


    By Cat Pumps

  • High pressure pumping systems - it`s all in the design

    High pressure pumping systems are used in a wide range of industrial processes. Careful selection of the components of the pumping system is essential for optimum safety and reliability. Failure to install a quality pump designed for the task could present a potential risk to human health or life or result in significant down-time and loss of production capacity with the associated costs to the ...


    By Cat Pumps

  • Peristaltic Pumps play key role in rectifying the pH balance of mine water

    After decades of uncontrolled industrial (mining) activities, water supply is under serious threat. Studies show that acid water levels in the country's mines are rising at a staggering average rate of 0.59 m/day. The water situation is in fact threatening the population’s survival. At the heart of resolving this problem are the treatment of water and wastewater. This article looks at ...

  • Mono nov munchers clear up pumping station blockages

    Broadbottom pumping station in Manchester was built in 1991 to deliver an average daily flow of 70 megalitres ofdomestic sewage to Hyde Waste Water Treatment Works, five miles away. Before the installation of the Muncher twin shaft grinders to protect the three sets of duty, assist and standby pumps - six pumps in total - there were serious problems with ‘screenings’ waste material, particularly ...

  • Eccentric Disc Pumps Create Product Recovery Cost Savings

    As budgets tighten, operators of manufacturing facilities must implement new ways to meet established production quotas while spending less money. Improved operational efficiencies can critically affect the profitability of food and beverage, pharmaceutical, and cosmetic manufacturers, from the most basic productionline level through entire plant efficiencies, and even overall corporate ...


    By MOUVEX

  • 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 ...

  • Peristaltic Pumps - A lot more than just heavy duty

    By design, the peristaltic pump is ideal for the dependable handling of abrasive, corrosive, viscous, high density and high solid content fluids. It thrives in those applications where other types of pump fail. Water and waste water industries, mining and chemical processing are all prime markets for this workhorse. But being equal to the tough demands of these applications is far from its only ...

  • 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 ...

  • Large Diameter Impellers Make Trash Pumps More Versatile

    The introduction of these impellers allow for a higher range of discharge pressure. Pumps are available in many types—diaphragm, positive displacement and progressive cavity—but the most common is a centrifugal pump. Centrifugal pumps have an impeller that spins, transferring energy to the fluid by centrifugal force and directing the water to the discharge point within the ...


    By Griffin Dewatering

  • ZF has improved pump production with an Equator gauging system - compact, rugged and able to inspect - Case Study

    ZF Marine in Padua, Italy, a manufacturer of pumps for marine propulsion systems, was looking for faster process control, with greater measurement capability. “We realised that it was possible to save time,” explains Gerardo Matterazzo, Quality Manager at ZF, “but we had to identify the right tool. With the Equator process control system from Renishaw, we found a gauging machine ...


    By Renishaw plc

  • Case Study: Sandy Balls Leisure Centre: Sewage Treatment Plant

    A customer with a tough application for a Positive Displacement RAS (Return Activated Sludge) Pump was experiencing high maintenance with the existing submersible unit, requiring lifting of the pump every 3-4 weeks, usually due to solids blockage. NOT a pleasant task regularly lifting from raw sewage! Triangle replaced it with a self-priming Boerger Rotary Lobe Pump. A useful feature of the ...


    By Triangle Ltd

  • Mono is the first choice for a successful summer season

    With important maintenance work being carried out to prepare for the new season, as at many such sites, the park’s existing pumping equipment was in need of an upgrade. Site owners Mr. and Mrs. Rudd therefore contacted Mono to solve their pumping needs and provide an up-to-date packaged system with easy access, in the event of any maintenance work. The Mutrator packaged system comprises duty and ...

  • Mono nov touches down at manchester airport

    Leading construction companies Amec and Carillion joined forces in the £172 million project to build ManchesterAirports second runway and turned to Mono to provide a Mutrator sewage pumping system for the new fire station. The Mutrator pumping system consists of two industrial progressing cavity (p.c.) pumps and two M18D macerators. The system was supplied with all interconnecting pipework and ...

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