Model No: CLASS150 DN50 API 5L X52
Insulated Joint
An insulation joint is a specific type of joint used in pipelines and piping systems to electrically isolate sections of the pipeline. These joints are designed to prevent electrical currents, which can be induced by cathodic protection systems or other sources, from traveling along the pipeline.
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Insulated Joint (also referred to as “Isulation Joint” or “Isulating joint”) are available in sizes ranging from 2"thru 48"and pressure ranging from ANSI 150 to ANSI 900.
Insulated Joint (Isulation Joint” or “Isulating joint”) electrically isolate sections of pipeline to prevent corrosion caused by stray electrical currents or interference from other pipelines and power transmission cables.
Three features assure electrical isolation:
- Insulating gasket that prevents metal-to-metal contact across the joint
- Internal cavities filled with a special dielectric compound
- Internal and external surfaces coated with two (2) coats of non-conductive epoxy paint, or coating per the customer’s specification.
The weld end hubs of our Insulated Joint (Isulation Joint” or “Isulating joint”) are provided in compliance with the customer’s piping specification. Optional extra-length pipe pups (provided by the customer) can be included in the completed joint.
Insulated Joints(Isulation Joint” or “Isulating joint”) feature a pre-fabricated, non-separable, and bolt-less design to satisfy customers that require a single-piece construction for simplicity of installation, elimination of maintenance, and ease of final wrapping and coating after installation in the pipeline. Pressure Fatigue, Torsion and Bending proof testing of the design was carried out to provide a design that is physically stronger than the pipe to which it is attached.
We are fully qualified to provide in-house Magnetic Particle, Ultrasonic, and Liquid Penetrant examination along with NDE test reports for the Insulated Joint(Isulation Joint” or “Isulating joint”) to meet customer requirements.
Each Insulated joint (Isulation Joint” or “Isulating joint”) manufactured by us is completely factory assembled and hydro-statically tested to 1.5 times the working pressure before shipment. In addition, each Insulated joint is electrically tested to verify its insulating capability. No maintenance required for the entire service life of the Isulating joint.
These connections are known in the pipeline industry by various terms such as the following:
- Isulating joint
- Isulation Joint
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