One of the challenges at the site consisted of bringing in bulldozers to build roads for truck-mounted cranes which were necessary to install the heavy-duty valves in the pipelines. Unlike butterfly valves or gate valves assuming only shut-off functions in pipeline systems, plunger valves and hollow-jet valves can meet the requirements of regulating operations. VAG-Armaturen GmbH has been making butterfly valves and special control valves particularly for dam applications for more than 50 years.

The tight schedule was particularly challenging for VAG’s design, manufacturing and logistics teams. Depending on the hydraulic conditions, there are different outlet parts available. Today, the term plunger valve is very common due to the design features shown in the attached picture:- The cross-section of the flow is annular in each position of the valve- The axially movable closing device is shaped like a piston or a plungerThe compact and single-piece body is made of high quality ductile cast iron (GGG-40) with an inner body which is connected to the outer body by cast ribs. All these curves had been checked and approved by the contractor and by the Algerian government.comInternet:www..vag-armaturen. Each of the valves including all the connecting parts was clearly marked with the name of the dam and the place of installation of the specific parts.This release was published on openPR. Plunger valves are suitable for inline installation and for installation at the end of pipelines. Previously, only the term of needle valve was used for valves having a controlling function. In dam applications, control valves such as plunger valves (or needle valves) or hollow-jet valves (or Howell Bunger valves or Fixed Cone valves) are installed after the butterfly valves on the air side. The dams are operated by the government, while the pipelines and water treatment plants are operated by the municipalities. First the roller gate on the water side was closed, special tools used to cut open the dam's pipelines, and the valves were installed with cranes. The piston or plunger is normally made of stainless steel and is operated by an internal piston-drive made of ductile cast iron or stainless steel.

They were equipped with the necessary devices and tools, including kitchen and accommodation containers Right after the completing of one dam, the teams went on to the next. A total of more than fifty plunger valves in nominal diameters between DN 300 and DN 1600 PN 10, several hollow-jet valves, butterfly valves, gate valves and air release valves were to be delivered by VAG and installed by AWE.For bigger dimensions and higher flow capacities, hollow-jet valves are available.vag-armaturen. Depending on the design of the stilling basin, hollow-jet valves can be used in a standard version or in a special version assembled with a hood pipe as a jet-guide pipe to concentrate the water flow after the valve. At the end of August 2003, the contract was awarded to VAG by AWE, the contracting company. On the gearbox there can be assembled an electric actuator for automatic operation or the valve can be operated by a pneumatic actuator without gearbox. These valves are available in nominal widths ranging from DN 150 up to DN 1600, and in special versions up to pressure rates of PN 100.com/en/ )Contracted by: Algerian Water Enterprises (AWE)Water was to be metered and documented at thirty-six of Algeria’s major dams. Working on behalf of the government, the delegation was under constant military protection. Everything down to the completeness check of the shipping container was meticulously planned. Two mobile installation teams from AWE carried out all of the installation works.

VAG actively participated in pre-project discussions and provided solutions for problems that were not always related to valves only. On the upstream side, the inner body has a spherical shape and the shape of the annular space results in a continuous narrowing towards the seat on the downstream side. The flow meters were installed at the specified distance from the control valves, and the installation was accepted and released for testing. But nothing failed in this big project.Most of the thirty-six dams are miles away from civilization. The main functions of control valves are as follows: - control the flow capacity- control the water level - control the pressure in case of a following pipelineAlgeria is situated between the Atlas Mountains in the north of Africa and the Sahara desert in the south of the country. During this period, all the specifications required for the calculation, dimensioning and designing of the valves were collected.All the valves were calculated and dimensioned for extreme situations.com/en/) - Normally butterfly valves are used as on-off valves and are usually installed in a valve chamber on the water side of bottom outlet lines in dams or in gravity lines leading to water treatment plants or hydro-power plants.comVAG-Armaturen GmbH is an innovative and reliable partner and has defined a new standard in water and wastewater technology: dynamic, responsible and innovative. Due to their design and usually made of manufactured steel, these valves can be produced in nearly any dimension. The cross-section of a plunger valve is reduced in its flow, which is symmetrical to the axis, until the fully closed position of the piston is reached and the valve is absolutely drop-tight. More than fifty plunger valves, fifteen of which had nominal diameters between DN 1200 and DN 1600 and weighed between 8 to 12 tons had to be manufactured and delivered within a very short period of time. In August 2003, a delegation of eight people, including engineers from VAG, visited all of the dams during a two weeks’ trip through Algeria.Project: Manufacturing and supply of different valves for the bottom outlets and pressure pipelines of 36 dams inAlgeriaValves: - VAG Plunger valves in dimensions ranging from DN 300 up to DN 1600 and with a pressure rating of PN 10- VAG Gas Meter Valve Manufacturers DN 800 Hollow-Jet valves with a pressure rating of PN 10- VAG DN 2000 EKN® Butterfly valves with a pressure rating of PN 10- VAG EKO® Gate valves ranging from DN 50 up to DN 200, with a pressure rating of PN 10- VAG DUOJET® Air release valves ranging from DN 50 up to DN 200, with a pressure rating of PN 10Including the necessary pipeline flanges, dismantling pieces, connecting screws and flange sealsActuators: All control valves are equipped with electric actuators and control panels made by German supplier AUMA.VAG delivered the complete material in six batches between December 2003 and December 2004. An essential advantage of the new VAG RIKO Plunger valve is its piston guiding which is made as bronze welding. Due to their considerable experience, VAG’s technicians and engineers were closely involved in this project – a € 15 m project that is yet to be equalled in type, size and غير مجاز مي باشدt.Peter OppingerHead of Marketing at VAG-Armaturen GmbHCarl-Reuther Strasse 168305 MannheimGermanyPhone: 49 621/ 749-2106Fax: 49 621/ 749-292106E-Mail: p. Hollow-jet valves can only be installed at the end of pipelines. This is one of the reasons why the contract was awarded to the German manufacturer VAG whose expert advice before and during the project the customer had come to have confidence in. The amount of water supplied from the dams was usually different from the amount which the municipalities received.Project duration: 2003 to 2004Executed by: VAG-Armaturen GmbH, Mannheim, Germany (hereinafter called VAG, www. As a rule, hollow-jet valves are not used for dimensions smaller than DN 400. This metering and documentation problem was solved thanks to the wide range of valves offered by VAG-Armaturen GmbH, a German company with more than 130 years of experience in the design and manufacturing of heavy-duty valves for water applications. The piston-drive is connected by a stainless steel shaft to a gear box assembled to a connecting flange on the outside of the body. For this purpose, a tender for the equipment of the pressure pipelines with flow meters and flow control valves was drafted in 2003. In the best case the butterfly valves are assembled with brake and lift cylinders, working as pipe brake devices for emergency quick closing by lever and weight in case of pipe bursts. To guarantee a reliable supply of water, the valves had to be of the highest quality and reliability.The operator of the dams, ANB (Agence Nationale des Barrages, Algiers) and the contracting company, AWE, highly appreciated the solution provider’s competence and excellent product quality of each of the VAG valves. One missing screw would have delayed resuming the supply of water. These valves always work as flow regulating or control valves. Due to the hydraulic conditions, VAG had to design venting systems for some of the control valves to avoid cavitation in each operating position. Each building site brought new challenges for the installation teams, all of which the teams were able to deal with thanks to their know-how and experience. The advantage of using a hollow-jet valve in combination with a hood pipe is that the water flow after the valve is concentrated nearly in the same diameter of the hood pipe. VAG created flow characteristic and cavitation curves, technical data sheets with all important outer dimensions including spare parts lists, operating and maintenance instructions for each of the control valves. VAG was able to fulfil each of the customer’s requirements. Plunger valves or hollow-jet valves are designed to perform regulating or control functions in water supply systems. Most of the country’s water is supplied from dams.oppingervag-armaturen. The supply of water plays an important role in confirming the government’s good reputation in the Algerian population and around the world. To ensure the accuracy of the special valves design, VAG used its own calculation program, VAG UseCAD.VAG-Armaturen (vag-armaturen.

, a manufacturer and supplier of high-quality surgical instruments announces the distribution of the Wholesale Gas Valve Manufacturers patent pending Sequential Suture Holder ™, also referred to as the Vijay-Robinson Sequential Holder.. GerMedUSA understands the importance of details when crafting Medical Surgical Instruments and Equipment, therefore GerMedUSA craftsmen continue to manufacture the most superior German Medical Surgical Tools and Hospital Equipment in the industry. During 1969-1972, there were no surgical instruments available in the medical world to hold several sutures for heart valve replacement and other surgeries. This caused the sutures to tangle.

To find out more information about the Sequential Suture Holder ™, visit: www. His idea was inspired by his colleague and mentor, the late Dr.2417 Jericho Turnpike, #333, Garden City Park, NY 11040 (USA)This release was published on openPR.This surgical instrument is designed to easily attach to a surgical drape.GerMedUSA. The Sequential Suture Holder is an aluminum, steel and plastic model of the Vijay-Robinson Sequential Suture Holder.com."At present, from my vision, we have manufactured, patent pending the design, an aluminum, steel and plastic model of the Vijay-Robinson Sequential Suture Holder named also in memory of the late Dr.About the Sequential Suture Holder ™The sutures are detached one-by-one, in sequential order and applied to the sewing ring of the artificial heart valve., F. George Robinson. Vijay, M. He is noted as the first to perform heart valve replacement and the first doctor to implant the pacemaker in a patient. As the sutures pass through the annulus of the heart valve, they’re applied to clamps and placed into the Vijay-Robinson Sequential Suture Holder. It is ready to be contracted at a surgical care company for worldwide distribution. Robinson was Chief of Cardiovascular and Thoracic Surgery at the Montefiore Hospital & Medical Center. Vijay, M. George Robinson. Then without any strings hanging below, the sutures are tied and cut. This innovative patent pending instrument is contracted through GerMedUSA for global distribution. He was also the Professor of Surgery at the Albert Einstein College of Medicine.

This innovative idea for the sequential suture holder has revolutionized the way surgeons perform surgery..GerMedUSA Inc." According to R.A. This innovative surgical instrument was invented by Dr R. Dr.Garden City, New York, March 21, 2011 -- GerMedUSA Inc. As a result, this prolonged the process of surgery. Then the needles are cut and all the sequential sutures in the holder are lifted up to maneuver the heart valve into the proper position. For decades GerMedUSA persist to be known world wide for having the most stellar quality Operating Room surgical instruments.D.C.S.D. The Sequential Suture Holder ™ makes surgical procedures less time-consuming and easier to handle.. is one of the most dominating manufacturer of Surgical Instruments, Veterinary Surgical Instruments and Dental Surgical Instruments.