UX0904000DB

XPRESS Underground Tank 4,000 Ltr 900mm Dia

The Promax Underground Stormwater / Wastewater tanks are suitable for the retention or detention of stormwater or the storage of potable water.

The plastic detention  tanks are fully tested and designed to withstand ground and water pressure at depth.The Promax Underground tank is engineered by geotechnical experts and Finite Element Analysis tested (FEA).

Distinctive Benefits for:

  • Stormwater retention, detention and Wastewater storage
  • Suitable to be installed under driveways, footpaths, car parks, forecourts and much more
  • Save time and money with multiple inlet/outlet plumbing ports
  • Vehicular Traffic Tested
  • Non Vehicular Traffic - Tanks in non-critical areas can be placed at any depth that is required

NZ Regional Stormwater Management Requirements

Please note: We recently completed an update of our product codes and descriptions. New codes are effective from 1 June 2022. For reference only, the old code for this product is: PMXUT04000.9

$4,385.00 (incl. GST)

Code Description Capacity(L) Diameter(mm) Length(mm) Weight(kg) Manhole Dia(mm)
UX0904000DB XPRESS Underground Tank 4,000 Ltr 900mm Dia 4000 900 6255 190 600

Yes! Promax Underground tanks are vehicular traffic approved.  

We recommend using a registered plumber or drainlayer to install your water tanks. Visit our recommended installers page to find one in your area. If you wish to install yourself, we recommend you follow the guidelines provided in the following resources: