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Expansion Joints

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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.

RED BAND Expansion Joints Temperature range -40° C up to +100° C, temporarily up to +120° C. Electrically dissipative.	ROTEX Expansion Joints Temperature range- 40° C up to + 130° C, temporarily up to + 150° C. Electrically dissipative.	CR Expansion Joints Temperature - 25° C up to + 90° C, temporarily up to + 100° C. Electrically non-conductive.	RED SPOT Expansion Joints Temperature range - 40° C up to + 90° C, temporarily up to + 120° C. Electrically dissipative.
YELLOW BAND Expansion Joints Temperature range - 20°C up to + 90°C, temporarily up to + 100°C. Electrically conductive.	YELLOW STEEL Expansion Joints Temperature range - 20° C up to + 90° C, temporarily up to + 100° C. Fire resistant up to 800° C.	YELLOW STEEL HNBR Expansion Joints Temperature range - 35°C up to + 100° C, temporarily up to + 120° C. Fire resistant up 800° C.	YELLOW BAND LT Expansion Joints Temperature range - 40°C up to + 90°C, temporarily up to + 100°C. Electrically dissipative.
ORANGE BAND Expansion Joints Temperature range - 20° C up to + 90° C, temporarily up to 100° C. Electrically dissipative.	GREEN BAND Expansion Joints Temperature range - 20°C up to + 100°C, temporarily up to + 110°C. Electrically non-conductive.	VITEX Expansion Joints Temperature range from - 15°C up to + 90°C, temporarily up to + 130°C.	WHITE BAND quick couplers Temperature range - 20° C up to + 90° C, temporarily up to 100° C. Electrically non-conductive.

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.

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