Pipe Plugs Articles

  • Influence of relative air/water flow velocity on oxygen mass transfer in gravity sewers

    Problems related to hydrogen sulfide may be serious for both network stakeholders and the public in terms of health, sustainability of the sewer structure and urban comfort. H2S emission models are generally theoretical and simplified in terms of environmental conditions. Although air transport characteristics in sewers must play a role in the fate of hydrogen sulfide, only a limited number of ...


    By IWA Publishing

  • Safety Manual of The Plugco In Pipe Plugs

    Stay Clear While the Plug Under Pressure!!! The End User must read and understand this Plugco Safety Manual before using the plug. The failure of a plug for any reason including improper maintenance, installation or use can result in bodily injury, death and/or property damage! 1-BEFORE USING THE PLUG [1.1] Read and understand this Plugco ...


    By PLUGCO

  • Abrasives case study - Fiberglas Canada

    Clogging was a major problem in transferring abrasive material in a fiberglass process. The resulting operating inefficiencies were ended with a new type of piping elbow. By Leslie Burt Fiberglass is produced in an automated process at Fiberglas Canada's plant in Scarborough, Ontario. The process starts with six ingredients, the main ones being sand, borax, soda ash and limestone. After they ...


    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

  • 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

  • Abrasives case study - Chromalloy

    Chromalloy, Drilling Fluids Division, produces barite at its Houston, TX facility. Chromalloy was using standard elbows on its 4- and 5"-diameter pneumatic conveying lines, which carry barite from the grinding mill to the storage tanks where it is stored prior to loading into hopper cars and bulk trucks. Figure 1: A cross section of the new type of elbow in use at Chromalloy. Suspended ...


    By HammerTek Corporation

  • Abrasives case study - Stonhard

    Elbow Cuts Maintenance Problem Stonhard Inc., processes and packages colored silica aggregate at its Ft. Wayne, IN facility. The material is part of a three-component mortar consisting of liquid epoxy resin and a liquid curing agent used for industrial and commercial flooring applications. Some 82,000 lb. of this aggregate is pneumatically ...


    By HammerTek Corporation

  • Case study - Westbay System delivered cost effective groundwater monitoring in mountainous region

    Multilevel well network provided high-density data at a reduced cost CHALLENGE After installing a number of traditional  monitoring wells at the site, it became  clear to the project scientists that more  and better data would be necessary  to properly characterize the complex  groundwater flow system. SOLUTION ...


  • 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 ...

  • Plugging `hot` pipes in extreme environments

    Some of the world's most intricate infrastructure is found in power plants, chemical plants, refineries, and other factories that use and combine industrial chemicals. The piping for fuel, chemical transport, water supply, and cooling needs is typically very complex and subject to high temperatures and pressures. And since plants are harsh environments, it's a given that piping needs regular ...


    By Petersen Products Company

  • 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

  • Sub-frost artesian environmental packer

    Artesian environmental well casings in cold regions pose a number of problems: Icing around the wellhead may pose safety concerns The true head cannot be measured without plugging the casing If the casing is plugged on the surface, freezing action may rupture the casing even if it is steel, almost certainly if it is PVC. The Sub-frost Artesian Environmental ...


    By RST Instruments Ltd.

  • 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.

  • Gentle unloading of sodium perborate from bulk vehicles by pneumatic plug conveying

    Subject: Unloading bulk vehicles; conveyor system; conveying distance 9 meters horizontal, 12 meters vertical   Client: Labud d.o.o., Zagreb, Croatia   Gericke Technology: Gentle unloading of bulk tankers; PTA-PL system (Pulseline®). Mobile docking station with integral controlunit, additional equipment for controlled and pulsed secondary air, injections along the pipe ...


    By Gericke

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