Promax has one of the most versatile and highest-quality ranges of underground tanks in New Zealand.
Our underground stormwater and underground wastewater tanks are designed for the effective retention or detention of stormwater or secure and reliable storage of potable water. Each Promax underground tank is engineered by geotechnical experts and Finite Element Analysis tested (FEA).
Our plastic detention tanks are thoroughly tested and made to withstand ground and water pressure at depth. All this means underground tanks you can trust in a wide variety of settings, including under driveways, footpaths, car parks, forecourts and much more.
The new, more rectangularshape of the ENDUROUnderground Tank bringsamajor advantage to the market by reducing excavation and backfill requirements, saving time and money.
Engineered by geotechnical experts and Finite Element Analysis tested (FEA), thePromax ENDUROUnderground Tankis fully tested and designed to withstand ground and water pressure at depth and is suitable for the retention or detention of stormwater or the storage of potable water.
Distinctive Benefits:
- Unique shape reduces excavation and backfill <20%
- 10 Year Warranty
- Traffic rated for vehicles <10000 kg
- Multiple Inlet/Outlet panels
Additional freight charges will apply to South Island orders.
1000l –
3000l –
4000l –
5000l –
6000l –
7000l –
8000l –
9000l –
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