Extension joints

Installation Location:

Between pipelines and valves, or between pumps and valves.

 

Functional Features:

Absorbs pipeline movement caused by thermal expansion/contraction or ground displacement.

Protects valves, pumps, and other equipment from stress damage.

Provides limited tie rods to control expansion/contraction range and prevent separation.

 

Types of Tie-Rod Expansion Joints:

 

Single tie-rod type:

Suitable for pipeline sections with limited space,
    lower pressure, and small movement.

Easy installation and simple maintenance.




Double tie-rod type:

Suitable for pump discharge outlets,
    high-pressuresystems, seismic areas,
    or large-diameter pipelines.

Provides reinforced limit control and
    bi-directionalanti-pull protection for
    the pipeline.