Pipe Plugs Articles

  • Abrasives case study - Essroc Materials, Inc.

    Plugging, Surging and Wear-Through Virtually Eliminated by Smart Elbows® At Essroc Materials, Inc., formerly Coplay Cement, plugging and elbow wear in pneumatic conveying lines caused unnecessary downtime and repair expense. The Frederick, MD, facility is a wet-process cement plant that produces 350,000 to 400,000 tons of cement a year using two 400-foot-long rotary ...


    By HammerTek Corporation

  • Plastics case study - RheTech

    RheTech found that HammerTek Smart Elbows could convey highly abrasive finished product with few signs of wear after a year in service. The sweeps previously used lasted only three or four months. RheTech, Inc. of Whitmore Lake, Michigan, a designer, manufacturer and marketer of proprietary thermoplastic polyolefin alloys and compounds uses such additives as minerals, fiber reinforcements and ...


    By HammerTek Corporation

  • Plastics case study - Rensselaer

    Cutting Corners is Easy with New Elbow Design for Piping A simple and inexpensive upgrading of the pneumatic conveying system at the Rensselaer Plastics Co., Rensselaer, IN., is reducing maintenance while saving the company money in a number of ways. Rensselaer Plastics Co. specializes in PVC piping products for the plumbing trade. Annual sales of the company are in the ...


    By HammerTek Corporation

  • Non-contacting solution for Plugged off flow meters in the oil patch - Case Study

    For years Petrobakken Energy Ltd. used inline turbine flow meters to track the flow rate of oil recycled to treaters. But with a high concentration of wax and sand in the oil, the turbine meters were quickly plugging off. The line had to be shut down at least once a day and the turbine flowmeters disassembled for cleaning. This was troublesome and expensive. Petrobakken knew there had to be a ...


    By Greyline Instruments Inc.

  • Future Cars & Shifting Environmental Burdens

    Ask the average person what they think passenger cars could be like in the future and you are bound to get a wide range of opinions. The more fanciful, looking into the longer term future, might envision an ultra-high-tech world where passenger cars are fitted with “anti-gravity” drives and hover around, powered by nuclear fission perhaps, with zero emissions. But chances are ...


    By thinkstep

  • The performance characteristics of rubber expansion joint

    Rubber Expansion Jointsmainly use the unique properties of rubber , such as high flexibility, high air tightness, chemical resistance and radiation resistance , high strength , thermal stability and strong polyester composite ply bias with the candidate , by high pressure , crosslinked molded high temperature , the internal high ...

  • 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

  • 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.

  • Unsealed tubewells lead to increased fecal contamination of drinking water

    Bangladesh is underlain by shallow aquifers in which millions of drinking water wells are emplaced without annular seals. Fecal contamination has been widely detected in private tubewells. To evaluate the impact of well construction on microbial water quality 35 private tubewells (11 with intact cement platforms, 19 without) and 17 monitoring wells (11 with the annulus sealed with cement, six ...


    By IWA Publishing

  • Non-Contacting Solution for Plugged Off Flow Meters in The Oil Patch

    For years Petrobakken Energy Ltd. used inline turbine flow meters to track the flow rate of oil recycled to treaters. But with a high concentration of wax and sand in the oil, the turbine meters were quickly plugging off. The line had to be shut down at least once a day and the turbine flowmeters disassembled for cleaning. This was troublesome and expensive. Petrobakken knew there had to be a ...


    By Greyline Instruments Inc.

  • An asymptotic observer-based monitoring scheme for a class of plug flow reactors

    In this paper a monitoring tool is designed for a class of plug flow reactors whose mathematical model is described by a set of first-order partial differential equations with different coefficients in the convective terms. The infinite dimensional structure of such a tool is derived according to the methodology established in the design of the well-known asymptotic observer. As a consequence, it ...


    By IWA Publishing

  • Power plants use oil skimmers to prevent contamination from spills

    Most hydroelectric plants designed in the 1960s were built with a station drainage sump that collects all drainage from the plant. As designed, float switches activate sump pumps that discharge liquids directly into the tailrace. The system cannot distinguish between types of liquids, so in the event of an oil leak, oil in the sump could be released into the tailrace. Modern ...


    By Oil Skimmers, Inc.

  • Pump Maintenance Know-How

    It’s no secret that a pump that runs at peak efficiency uses less fuel, experiences less downtime and costs less to operate. The time you spend maintaining your pump is actually an investment in its lifetime performance and value. In fact, there are many ways that a diligently maintained pump can reduce your costs, while increasing efficiency. For instance, by ensuring your pump investment ...


    By Gorman-Rupp Co.

  • Time to change habits, as well as light bulbs?

    November 16, 2010 We are bombarded daily by advertisements selling us soft drinks, pharmaceuticals, cars, insurance, junk food, teeth whitener, diet programs, and on and on. But when was the last time someone tried to sell you on using more electricity? I cannot think of a single commercial that encourages us to plug-in, even though electricity is the chief product of 3,000 utilities in the ...

  • Abandoning Monitoring Wells: Safety Issues

    Monitoring wells are typically constructed to gauge the extent of contamination, assess water quality and conduct other hydrogeologic studies. Depending on its objective, the monitoring well may remain in use or may be abandoned permanently. When declared inactive, the well is many a times left as it is. Open unused wells are hazardous to life and environment: • Contamination may spread from one ...

  • Divers install eccentric plug valve in reservoir tunnel

    A team of specialist divers – working in a cramped, water-filled tunnel 20 metres beneath the surface of a reservoir – has just completed installation of an eccentric plug valve to control water flow.The valve and associated equipment has been supplied to United Utilities by Viking Johnson (http://www.vikingjohnson.com), a world leader in the supply of pipe joints ...


    By Viking Johnson

  • 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.

  • The Evolution of Plug Flow BNR at Durham AWWTP

    ABSTRACTThis paper describes experiences with plug flow nitrification and plug flow biological nutrient removal (BNR) at Durham Advanced WWTP. The kinetic advantages of the plug flow configuration for nitrification have been recognized for some time; however, limited plug flow BNR process design information was available at the time (1997). The case study began with pilot testing in 1998, during ...

  • Casebook New Scrubber Technology reduces installation costs case study

    A100,0000-actual-cubic-feet-per-minute (acfm) RotaBed scrubber recently supplied to Tri-Gen Biopower for sulfur dioxide (S02) control at Gilman Paper, St. Mary's, Ga., saved the company an estimated $150,000 in installation costs-Installation of a heavier packed tower would have required extensive reinforcement of an existing steel support structure, said Ken Schifftner, product/district manager ...


    By Bionomic Industries Inc.

  • Reuse in Deconstruction Projects

    Beyond Waste in Santa Rosa, California demonstrates that reuse deconstruction in the mainstream construction industry can be a money-making prospect — by getting paid to take the building apart and from the sale of recovered materials. Beyond Waste’s first “high profile” project was at the Presidio, a former Army base located on the south shore of the Golden Gate entrance to the San Francisco ...


    By BioCycle Magazine

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