Monolithic Insulation Joint

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Monolithic Insulation Joint

The Vatac Insulating Joints are designed as per the requirement of, but not limited to, the following Codes and Standards: ASME VIII div.I
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Description
The Vatac Monolithic Insulation Joint is a new generation developed product to resolve use problems of old insulating flange. It is the essential pressure component necessary for steel pipeline cathodic protection system, broadly applicable to steel pipeline cathodic protection systems. Our company's insulating connectors adopts a unique design based on referencing foreign latest product structure to overcome problems of inadequate rigidity, prone to leak, unable to be buried under ground, short service life, etc. The insulating connectors have realized buried parts maintenance-free function and allow a service life matching the pipelines.

Technical Characteristics:
» Size:1"~84"
» Pressure Grade: 1.0MPa~40MPa
» Service Life:same as the service life of pipeline
» Ambient Temperature:-30째C~90째C
» Applicable Medium: oil, gas, water, chemical feed, mineral slurry
Quality Requirement:

» Insulating Resistance value≥10MΩ @DC1000V, Maximum voltage:≥3KV

» Insulating Intensity: no breakdown or arc for one minute @2500V 50Hz

» Hydraulic Pressure testing pressure: 1.5 times of designed pressure

» Air-tight Testing Pressure: equivalent to designed pressure

» Non-destructive Testing: All the butt-connectors are 100% ray-detected according to JB4730-94; other pressure welding seams are 100% magnetic power detected.
» Groove: Conforms to API5L Standard


A Monolithic Insulating Joint is a welded pre-Fabricated 3-pieces union, for pipeline electrical sectioning, commonly used when the Cathodic Protection is present to prevent any interference with the corrosion control.



The construction is specifically oriented to the connected pipes, assuring a comparable overall strength, matching all the internal dimension to allow possible pig smooth passage; the pups length is calculated in order to protect the joint mechanical and electrical integrity during the welding activities.

The Vatac Insulating Joints are designed as per the requirement of, but not limited to, the following Codes and Standards: ASME VIII div.I App.2 ASME IX ASME B31.8, B31.4, B31.3 NACE MR0175 UNI 11105.
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