The Safety Valve - Leser.ru

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LESER – the company By tradition – always a step ahead 4 Düsternstrasse 41-53, about 1904, gate to factory
History “Loyalty by change”. With almost 200 years of experience LESER ranks among the pioneers of mechanical engineering in Germany. The company, founded as a brass foundry in 1818, developed its first safety valves for the protection of steam boilers. Even at those days LESER products were designed to protect man and environment. As industrial development has been progressing very rapidly demands for safety valves have increased continuously too. Step by step LESER has developed its safety valves to reflect the state-of-the-art. The company has extended its product range to provide solutions for all sectors of this industry. Investment in research and development is therefore an important impetus for new developments at LESER and in this industry as a whole. LESER sets standards – now and in the future. With its 280 employees in Hamburg [1] and Hohenwestedt (Northern Germany) [2] LESER belongs to the leading manufacturers of safety valves worldwide. The product range comprises a total of 23 valve series (nominal diameter range DN 10 ...400 - NPS 1/2 II ...16 II ) for applications in all branches of the industry. The annual production currently amounts to 60,000 safety valves. LESER is a member of VDMA, ASME and TÜV-Nord. 1 2 1818 Founded as a brass foundry in Hamburg-Neustadt 1833 First site with workshop at the same location 1884 Complete range of steam fittings, including safety valves 1914 Expansion with the purchase of the „Wendenstrasse“ site 1943 Destruction of the plant in Hamburg, relocation of production to Hohenwestedt 1948 Reconstruction at Wendenstrasse 1957 First test lab for safety valves 1959 First type test approval 1970 Specialisation in safety valves 1990 First American approval Now: 5th generation family business. Market leader for safety valves in Germany and Europe 5
Page 1 and 2: EN The Safety Valve
Page 3: Contents LESER - the company ......
Page 7 and 8: LESER worldwide The company’s rep
Page 9 and 10: Tests and trials Capacity Determina
Page 11 and 12: 3 4 Safety valves protect all kinds
Page 13 and 14: Bonnet You have the choice between
Page 15 and 16: Applications: Chemical industry - P
Page 17 and 18: Applications: • Power stations an
Page 19 and 20: Applications: 6 3 4 2 1 5 • Large
Page 21 and 22: Applications: Type 431/433 • Chem
Page 23 and 24: Applications: • Carbon dioxide pl
Page 25 and 26: 486 25,40,50,65, 80 Reduced dead sp
Page 27 and 28: Applications: Type 546 • Multiple
Page 29 and 30: There are special rules and regulat
Page 31 and 32: Applications: • Continuously func
Page 33 and 34: Applications: • Large steam boile
Page 35 and 36: 1 2 3 The stainless steel bellows [
Page 37: Body materials Opening Complete 0.6
Page 40: The Safety Valve LESER GmbH & Co. K

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