EXPANSION ERV JOINTS
» Active in the market since 1965 with long-standing development know-how
» Global Support and Production Flexibility
» Due to their construction and quality, our expansion joints have become an international standard
of the industry
» Used in piping, as compensators for absorption of thermal expansion, to reduce the
vibration and noise
» Expansion joints are parts of piping systems for fluids (liquid and in condition
gaseous)
» There are 13 different models of Gaskets suitable for different applications
» Varied Sizes DN 25 DN 1000 MM
» Operating Pressure depending on Size and Model PN 10 25 bar
» Varying Temperature Ranges Depending on the type of Rubber 4040°C to 130130°C
APPLICABLE SEGMENTS
Petroleum based products
Water
Chemistry
Liquefied petroleum gas (LPG)
naval industry
Food industry
Piped gas / Natural gas
abrasive media
Pharmaceutical industry
WHY CHOOSE AN ERV JOINT
» Elaflex ERV Gaskets have rubber bellows molded into a single ball with flanges
(loose) metal swivels.
» Its construction and lengths (installation sizes) have become international standard
recognized.
TYPES
ROTEX
»ROTEX expansion joint for permanent service with heating water, cooling water and hot air
(without oil). W.P. 10 bar up to 100° C, 6 bar up to 110° C
» Temperature range -40ºC up to 130ºC, temporarily up to 150ºC.
ERV – GS
»YELLOW STEEL expansion joint. Similar to type ERV-G, but fire resistant to ISO 15540
(type approved).
» Temperature range -20ºC up to 90ºC, temporarily up to 100ºC.
ERV – CR
»CR expansion joint for cold and warm water, seawater (also oil containing), various waste
water, lube oils and greases, air, compressed air.
» Temperature range -25ºC up to 90ºC, temporarily up to 100ºC.
ERV – R
»RED BAND expansion joint for water, drinking water, waste water, seawater, cooling water, chemical waste water (without oil), chemicals, acids and alkalis, salt solutions, alcohol
» Temperature range -40ºC up to 100ºC, temporarily up to 120ºC.
ERV – G
» YELLOW BAND expansion joint for petroleum based products up to 50% aromatic, also town gas and natural gas, cooling water emulsions with corrosion preventing oil.
» Temperature range -20ºC up to 90ºC, temporarily up to 100ºC.
ERV – GR
»GREEN BAND expansion joint for acids, alkalis, chemicals and aggressive chemical waste toilet.
»Temperature range -20ºC up to 100ºC, temporarily up to 110ºC.
»For oil contaminated compressor air up to 90°C
CONFIGURE YOUR OWN PRODUCT
Whether standardized options or fully customized systems: to choose a suitable expansion joint system for your application, follow the process on our website www.ervconfigurator.elaflex.com.ar or contact our sales team.
FUNCTIONALITY AND FEATURES
Standard length
Axial Compression
Axial elongation
Lateral Offset
Angular Offset
Vibrations
ACCESSORIES
Teflon (PTFE) Liner and Ring
It is used when the chemical resistance of the chosen ERV type is insufficient. Resistant to all commonly used liquids. Suitable for suction work, supports up to +70ºC.
Angular Limiter
Limiters are recommended when it is not possible to secure the piping system with sufficient fixed points or when partial relief from the fixed points is desired.
Fire Protection Cover
Reliably protect the expansion joint against heat radiation and direct flames up to +800°C for 30 minutes (ISO 15540).
FLANGES
Elaflex Expansion Joints can be manufactured with Flanges of different standards and shapes. They are models of Joints suitable to support axial, lateral and angular movements.
Rules: DIN, ASA, SAE, BS, VG, TW, JIS
APPLICATIONS
Movement Examples
