rotary positive displacement pump Articles

  • 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

  • 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

  • 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 on the move with sintec

    Mono’s Widethroat W range pump forms an essential part of Sintec’s mobile system by pumping the thicker groutmixes more quickly and efficiently. Once the mobile system is in-situ and drilling of an exploratory hole is almost complete, a mixer combines the bentonite/cement grouts to form bentonite slurry. This is then transferred by the W Range pump to the holdingtank ready for injection into the ...

  • Mono’s pet project at c&d foods

    Four SW042 progressing cavity pumps are fitted on the production line; two are fixed in the extrusion lines and another two are mounted on mobile trolleys. At the beginning and end of each extrusion cycle, if the purée is not of the correct consistency for packing or sale, it is extruded into the extended hopper of the mobile pump and then wheeled to the fixed pump where the purée is transferred ...


    By NOV Mono - Mono Pumps Ltd

  • Extraction well design for DNAPL recovery.

    The potential for downward migration of dense nonaqueous phase liquid (DNAPL) into deeper portions of a saturated hydrogeologic unit has important implications for successful groundwater remediation. Little information has been published regarding the design of extraction wells that allow DNAPL recovery without simultaneously creating a conduit for cross contamination by vertical migration ...


    By Hargis + Associates Inc

  • Evaporator concentrates brine pond for about 1 cent per gallon

    The Facility Eagle-Picher Industries has an 8-acre hazardous waste surface impoundment pond at its Electro-Optics Division plant in Quapaw, Oklahoma. The Problem By the time Eagle-Picher contacted Aqua-Chem ICD, the impoundment pond had been in use for more than 20 years and contained more than 5 million gallons. Environmental regulation required the plant ...

  • Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures

    Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water ...


    By Solinst Canada Ltd.

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