Dielectric Coupling

Specifications

Insulating joint

Monolithic Insulating joint (Isolating joint)

Introduction:

Monolithic Insulating joint (Isolating Joint) is the key component in Cathodic Protection (CP) System. It is mainly used in underground gas transition and distribution system including gas reducing station, each section of gas transition and distribution pipeline, also the part between gas reducing station and the pipeline, which increase the life of the plant and equipment by reducing or eliminating the electric and chemical corrosion damage.

Specifications:

*  Suitable for oil, city gas, nature gas, LNG, LPG, etc.

*  Size:  1 to 56 inch

*  Matching pipeline: API 5L Gr. B, X42, X52, X60, X65, X70, X80, etc.

*  Forging flange material:  A694 F42 to F80 to comply with the pipeline

*  Pressure rating:  ANSI Class 150, Class 300, Class600, Class 900, Class1500, Class2500

   Max. pressure rating:  2.5Mpa,  6.4Mpa, 10Mpa, 16Mpa, 25Mpa, 42Mpa, 69Mpa, 96Mpa

*  Ambient Temperature: -20^oC ~ +60^oC

*  Working Temperature: -20^oC ~ +120^oC

*  Standard Testing:  

    -- Hydrostatic test: 1.5 times MOP (Max. Operation Pressure).

    -- Electrical Resistance:  ≥ 20M @ 1000v DC under dry air at 25 ^oC

    -- Dielectrical voltage:  ≥ 3.5kv AC 50Hz (1 minute) (Can be 5kv as per request)

Ordering Information:

Please specify the following requirement:

**  Pipeline Diameter, Grade of pipe, wall thickness of pipe;

**  ANSI rating

**  Medium to be transported in pipeline and temperature of transported medium

**  Additional Testing required except standard testing: X-ray, ultrasonic & magnetic testing, etc.