How V33 Works

V33 works by providing an effective seal against leakage.

  • The existing pipe is locally isolated using bag technology
  • A small section of the lined pipe is cut out to give a clean end for connection
  • An external compression seal is positioned over the end of the newly cut pipe
  • A V33 Transition Adaptor is positioned on the cut end of the lined host pipe ensuring that the inner wall of the V33 butts up to the host pipe. The V33 is then adjusted to ensure correct positioning and then the external compression seal is bolted to the rest of the V33 and tightened to create a seal against the outside of the pipe
  • An Amex-10 internal seal is then fitted to seal the joint between the CIPP lined host pipe and the V33
  • A pressure test is then applied to the seal to ensure that no gas can pass up the annulus or to atmosphere
  • As an additional level of security, quick-curing encapsulation epoxy resin is poured through the top of the V33
  • The flange of the new pipe can then be bolted to the flange on the V33 Transition Adaptor