Implementing Promax Storage Solutions in Seismic Zones
One-piece construction, built-in seismic restraints and fewer connection points. How Promax underground and slimline tanks are designed for ground that moves.
Read the guide
Articles | Knowledge Hub
Make Better Decisions About Water Storage
Practical, plain-language guidance on choosing, installing and maintaining water storage, written by the Promax team.
Risk Assessment for Integrated Water Systems
Ground movement is not only an earthquake problem. In Auckland, where seismic activity is low but the clay is highly expansive, the soil moves with every wet and dry cycle. What that means for leak risk, B2 durability, liability and repair in integrated water systems.
Read the guide
Which is the strongest water tank?
The Promax corrugated ENDURO is the strongest New Zealand-made plastic water tank. Continuous sidewall corrugation and one-piece moulded construction let it be buried up to a metre and back-filled against, with a full guarantee of 20 years.
Read the guide
What is a Seismic Restraint, and why do I need one?
Seismic restraints anchor an industrial tank's base to a concrete pad so it cannot move in an earthquake, cyclone or flood. Here is what they do, and why New Zealand's seismic record makes them essential rather than optional.
Read the guide
Explore Our Range
Shop Popular Categories
Browse Promax tank categories for residential, rural, commercial, and specialised applications.
Water Tanks
Reliable Storage
Water Tanks
Durable above-ground water tanks for rural, residential, and commercial storage.
Underground Tanks
Space Saving
Underground Tanks
Underground water storage for sites where space, access, or visibility matters.
Slimline Tanks
Built for Tight Spaces
Slimline Tanks
Narrow-profile tanks designed for homes, boundaries, and other restricted spaces.
Industrial Tanks
Heavy Duty Solutions
Industrial Tanks
Specialised tanks for demanding commercial, industrial, and process applications.