Features and advantages

  • A welded monolithic construction has an enhanced capability to withstand mechanical loads and is convenient while installing and operating.
  • A patented U- shaped double seal system has unique sealing and dielectric properties, and has a wide range of constructive and technological advantages as compared with O-ring seal systems:
    • absence of explosive decompression effect;
    • applicability under a high pressure (up to100 MPa);
    • applicability at high mechanical loads (tension, compression, bending, torsion), including loads similar to the base material of a pipeline;
    • possibility to manufacture large diameter couplings (up to 3300 mm).
  • Possibility of above -ground and underground installation.
  • Applicability in all the climatic zones with operating temperatures ranging from minus 6000C to plus 2500 C.
  • Factory outer coating (epoxy or polyurethane) provides an effective electrical and mechanical protection against external influences.
  • Nonconductive inner coating allows to avoid a bypass during the transportation of a conductive product.
  • All insulating monolithic couplings pass the following set of tests:
    • Non-destructive testing of welds;
    • Strength test by trial internal hydraulic pressure;
    • Leak test by internal pneumatic pressure;
    • Electric strength test.