801 / 802 Expansion Joint


JCM Expansion Joints permit up to 10” of concentrated pipe movement that provides for normal expansion/contraction of pipelines subject to variations of both environmental and line content temperatures. JCM Expansion Joints are manufactured using a telescoping design that consists of a fabricated steel body, or housing, that accommodates an inserted internal “slip pipe” that moves in and out of the body.

This free movement absorbs the linear, or axial, movement of the section of pipe. The fabricated steel body houses a “packing” area of alternating rings of lubricated flax and rubber that provides the water tight seal during the cycling of the joint. JCM Expansion Joints offer several design options including end connections, coatings, limit rods, stainless steel fabrication and others.

JCM Expansion Joints are manufactured for each specific application allowing for the incorporation of special options or engineered features required for the installation.


Connection Permanent

  • Provides linear expansion
  • contraction in systems experiencing line content or environmental thermal fluctuations