Flexible Connections & Expansion Joints

Flexible connections should be used on all fittings into and out of PE Storage tanks. This safeguards against leakage and stress over time.

  • Seismic Expansion Joints
  • Rubber Bellows
  • Painted, Zinc, Galvanised or Stainless Backing Rings
  • Threaded, Table D, E, ANSI.


Code Description
Flexible Connections & Expansion Joints

We recommend using a registered plumber or drainlayer to install your water tanks, however if you wish to install yourself the below guidelines will be useful.

Click here to download Promax Big Tank Installation Guide PDF.

Click here to download Underground Tank Installation Guide PDF

Click here to view an installation video of a Promax 30000L Water Tank