Tank Installation Instructions


Your Promax Water Tank is guaranteed to the original purchaser for a period of 20 years against faulty workmanship provided installation is carried out in the correct method. Promax does not take any responsibility whatsoever for the preparation of tank sites or the installation of its products.

Correct tank site preparation, as well as preservation, is the sole responsibility of the purchaser. The recommended site preparation is as follows:

Ensure that the tank site is flat and level, free from rocks or stones etc, or any other foreign matter that may damage the tank’s base
Ensure that the tank site is well compacted, if fill is used to prepare or level site
Ensure that the tank site is at least 300 mm larger in diameter than the tank
Ensure a flexible hose is installed after gate valve and outlet at least 300 mm in length
If a sand fill base is used, a retaining wall must be provided to prevent sand from washing away after installation, i.e. tank base must remain fully supported at all times
Tie down and secure tank on delivery either by tying down with rope or putting at least 200 mm of water in the bottom
Tank outlets must not be subjected to any extra force e.g. over tightened
Overflow must be piped clear of base to avoid erosion
The number of inlet pipes, their sizes and capacities must equal the number of overflow pipes, their sizes and capacities
Do not allow tank site to deteriorate after installation due to any form of erosion or site destruction caused by vermin such as rabbits
For your safety please use caution when working on domed lid

Key Fact, Promax Plastics
Because of the strength of the one piece corrugated construction Promax tanks can be buried up to 1 metre deep.

*Talk with the Promax team for more information on this feature