The Witzenmann Group is one of the world's leading manufacturers of flexible metal elements including metal hoses, expansion joints, metal bellows and automotive components. In 2017, over 4,300 employees generated sales in excess of 614 million euros. Boasting the world's broadest range of products in the industry, Witzenmann offers engineered solutions designed to decouple vibrations, compensate for thermal movement, aid installation and convey a wide range media. As a development partner of customers within the automotive, industrial, technical building equipment, aerospace and many other markets, Witzenmann has an extensive portfolio of machinery / tooling, prototype production as well as comprehensive range testing equipment. As an international group with 24 companies in Europe, America and Asia, Witzenmann is renowned for high quality in the key markets worldwide.
HYDRA® corrugated hoses are formed from seamless or longitudinally welded tubes and are available in a large variety of wall thicknesses, material types, and assembled configurations. They are typically used to provide leak tight connections when conveying fluids / gases either under positive pressure or vacuum. HYDRA® corrugated bellows are manufactured by hydraulic forming of single or multiple thin walled tubes depending on the required characteristics. Single-ply bellows have lower spring rates and are widely used in vacuum technology. Multi-ply bellows provide greater resistance to pressure whilst remaining their flexibility. One of the many applications include use as a flexible seal around a valve shaft where operating pressures of up to 400 bar can be required. Corrugated bellows that are required to meet the strictest technical cleanliness demands / required free of contaminants (particles and film residue) are manufactured in a special clean room environment.
In vaccum technology, non-braided annularly corrugated hoses are typically used with standardised small flanges as quick-assemblies for the connection of devices, pump, measuring equipment and test benches.
Annularly corugated hoses without plastic seals can be heated up to 450 °C and can therefore be used in ultra high vacuum applications.
HYDRA® Corrugated hoses are formed from seamless or longitudinally welded tubes and are available in a large variety of wall thicknesses, material types, and assembled configurations. Corrugated hoses that are required to meet the strictest technical cleanliness demands / required free of contaminants (particles and film residue) are manufactured in a special clean room environment.
HYDRA® precision bellows meet the strictest dimensional controls, cleanliness, functional and lifetime requirements. Specifically adapted to customer specifications, these bellows are manufactured under clean room conditions with continuous production monitoring and quality control. The smallest HYDRA® precision bellows are just 2 mm in diameter and are therefore suitable for use in mechatronic systems as well as the more traditional applications.