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.
» Pressure Grade: 1.0MPa~40MPa
» Service Life:same as the service life of
» Ambient Temperature:-30째C~90째C
» Applicable Medium: oil, gas, water,
chemical feed, mineral slurry
» 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
» 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.