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Rubber expansion joints / compensators are used as flexible connectors within pipe systems. Based on the German expression "Elastische Rohrverbinder" the type brand ERV® is being used.
ERV are single sphere type rubber expansion joints within swiveling metal flanges. The high quality bellows are produced in a mould. Starting fourty years ago, construction and length of ERV expansion joints have become reckognised standards worldwide.
Problem Solvers within Pipe Systems
- ERV are distinguished by a large axial, lateral and angular range of allowable movement, low reaction forces
and low inherent resistance.
- ERV are used to absorb tensions caused by temperature changes (thermal expansion), and equalize structural
settling such as basement subsiding or ground movements.
 They are suitable as a pipe insert / expansion
piece to
facilitate inspections of valves or other devices.
- ERV are perfect noise dampeners and ideally qualified to reduce vibrations. The major part of the piping's
structure-borne noise and the low-frequency noise generated by fluids is eliminated.
- "Better safe than sorry": ERV serve to equalise assembly inaccuracies. If ERV are provided for during the
planning phase there will be less problems during installation caused by inaccuracy. This saves costs.
- Quality production: only premium quality bellows exclusively made for us by ContiTech, Germany are used.
Both ELAFLEX and ContiTech have a reputaion for reliability and longevity.
- Big range: for practically all media, sizes DN 25 - 1000 mm.
- Fast delivery: due to a large stock of more than 20.000 bellows.
Further information about ERV Rubber Expansion Joints:
ERV product range: catalogue pages for download
Contact: the sales team
Application: some photos of expansion joints in use
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