Independently expandable double containment joint

摘要

A double containment pipe system with an expandable joint. The double containment pipe system may comprise an inner, or carrier, pipe assembly and an outer, or containment, pipe assembly. The expandable joint allows the inner, or carrier, pipe assembly and an outer, or containment, pipe assembly to expand axially independently. Such an expandable joint for a double containment pipe system may be beneficial where the carrier and containment pipe assemblies expand or contract at different rates due to different materials and/or different temperature environments.