SPECIAL SCREWS FOR VALVE TESTING BENCHES
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IN PETROCHEMICAL PLANTS, POWER PLANTS and other industrial installations, control valves precisely regulate the movement of gases and liquids. SCREWS THAT ARE MANUFACTURED BY WHIRLING (MANUFACTURING PROCESS) PROVE TO BE THE RIGHT CHOICE FOR PETROCHEMICAL PLANTS, POWER PLANTS AND OTHER INDUSTRIAL INSTALLATIONS. LEAKING VALVES ARE ONE OF THE single greatest impediments to the efficiency of industrial processes. These valves can be big pieces of equipment, with dimensions measured in metres but manufactured to micro tolerances to ensure their air-tightness. It is important that they are rigorously tested before they can be trusted for use. “The monitoring of the condition of valves on both onshore and offshore oil and gas installations is essential. The failure of a valve to operate on demand, or fail to provide a shut off to flow can have a major impact on personnel, the environment and capital assets,” warns David M. Anderson, sales and marketing director of Score Diagnostic Limited, a leading company in the field of valve diagnostics technologies and equipment. Quality testing for these valves involves placing them on a test bench, where they are clamped securely in place

by a vice mechanism which opens and closes by travelling along a large threaded spindle. Just as the valves are subject to the strictest quality control, so the test benches themselves must also meet the very highest performance standards. The design and production of screw spindles for valve test benches is a specialism of German engineering company Bornemann Gewindetechnik GmbH & Co KG, based in Delligsen. Bornemann has a long-standing reputation for precision manufacturing of threaded components it custom-engineers for all kinds of specialist industrial winding applications. friction;...

perfect to the naked eye, is very slightly rippled. The surface of the flanks is embedded with micro pockets which retain lubricant that would otherwise be squeezed out as the nut passes across it. Bornemann’s whirled thread spindles have proved themselves able to withstand wear and tear even in heavy lifting applications. Even under persistent heavy pressure, there is no deformation or erosion of these lubrication pockets. The result for valve test benches is longer maintenance intervals, with less lubricant applied less often. At the same time, the risk of damaging stick-slipping is also...

TRAPEZOIDAL THREADS, NUTS, SPECIAL THREADS, FEEDSCREWS As a SPECIALIST for CUSTOM MADE threaded parts we have more than 25 years of experience in industries with high quality requirements such as the drive technology sector, medical technology, food processing, offshore applications, the defense industry, heavy lifting machinery or special purpose machinery. For these applications we provide threaded parts with a very high degree of CUSTOMIZATION – this is our strength. We focus on your individual requirements not just on the norm. We can manufacture your thread out of any material...