Expansion Joints

Compensating : rubber expansion joints are components for the installation into pipe systems. They serve to reduce vibration and noise, for the compensation of movements and assembly inaccuracies, as well as pipe insert pieces to facilitate inspections. Our ‘ERV’ expansion joints are distinguished by a large axial, lateral and angular range of allowable movement, low reaction forces and low inherent resistance. They 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. Due to swiveling flanges and smooth bolt holes assembling is easy. High burst pressure, integrated sealing surface with wire core and quality production by ContiTech are advantages that provide for long service life.
From our extensive product range here is a selection of some of the types used in the chemical industry.

ERV-GR

Green Band’ expansion joints for acids, alkalis, chemicals and aggressive chemical waste water.
Liner : Hypalon®, seamless, highly abrasion resistant Reinforcement : PA textile cord Cover : Hypalon® Temperature range ( depending on
medium ) -20 °C up to 100 °C, temporarily
up to 110 °C. Available in DN 25 – 700 mm
Shown example : ERV-GR 80.16, i.e. ‘Green Band’ expansion joint DN 80 with DIN PN 16 flanges of steel, zinc plated and thick film passivated

RV-R

Red Band’ expansion joints for water, drinking water ( var. approvals ), cooling and waste water with chemical additives, weak acids and alkalis, salt solutions, technical alcohols, esters and ketones.
Liner : Butyl / EPDM, seamless,
low permeation Reinforcement : PA textile cord
Cover : EPDM, ozone proof
Temperature range ( depending on
medium ) -40 °C to 100 °C, temporarily
up to 120 °C.
Available in DN 25 – 1000 mm
Shown example : ERV-R 80.16, i.e. ‘Red Band’ expansion joint DN 80 with DIN PN 16 flanges of steel, zinc plated and thick film passivated

V- . . TA | TAS

All ERV types can be fitted with an additional PTFE lining with universal
media resistance. After receiving your order, flanges are assembled, followed by the production of the lining.
Additional order number : … TA
Additional order number for PTFE lining and PTFE vacuum support ring :
… TAS
Temperature range : the maximum temperature depends on the chosen bellow type.
Available in DN 25 – 300 mm
Shown example : ERV-W 80.16 SS TA,
i.e. ‘ White Band’ expansion joint DN 80 with DIN PN 16 stainless steel flanges and PTFE lining

VITEX

VITEX’ rubber expansion joints with a wide chemical resistance, among other for hot oils, benzene, toluene, xylol, fuels with aromatic
content > 50 %, Biodiesel, aromatic and chlorinated hydrocarbons and mineral acids.
Suitable as flexible safety compensator for petrochemical plants, engines, power stations and flue gas desulphurisation plants. Liner : FPM, seamless, no permeation Reinforcement : PA textile cord

Cover : ECO, good resistance against weathering, ageing and ozone; electrically dissipative Temperature range ( depending on
medium ) -15 °C, up to 90 °C, temporarily
up to 130 °C
Available in DN 25 – 200 mm
Shown example: VITEX 80.16 with flanges of steel, zinc plated and thick film passivated