XPRESS Water Tank 15000L

XPRESS Water Tanks by Promax are made from high grade polyethylene plastic, providing Promax quality at an affordable price.

  • One piece construction - reducing maintenance and costs
  • Threaded 50mm outlet at base for quick and easy set up
  • Complies with AUS / NZ standards for drinking water
  • 20 year Industry Warranty
  • Free delivery to your property
  • Certification to AS/NZ 4766 - Polyethylene storage tank standard

$3,089.00 (incl. GST)

Code Description Capacity(L) Diameter(mm) Width(mm) Height(mm) Weight(kg) Manhole Dia(mm) Outlets(mm)
XPBT15000 XPRESS Water Tank 15000L 15000 3000 3000 2650 220 600 1x50

There are 2,200 gallons in a 10,000 lt tank.

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All tanks over 10,000 lt are delivered on purpose built trucks.

Clearance required for truck and trailer is 19 metres long, 5 metres high, 3.5 metres wide.

The truck only (without the trailer) is 9 metres, 5 metres high and 3.5 metres wide.

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No, all the tanks are made from material that complies with international food grade standards and are suitable for potable water. 

There is no plastic tainting or taste whatsoever.

The outlet fitting is 50mm from the base to the outlet hole. 

The lead time from order to delivery is approximately 5 - 10 working days. 

This can vary on time of year and where your property is located.

If you require your tank urgently or have specific delivery requirements talk to our customer services team - they will be able to help ensure you get your tank when you require it.

See full installation instructions and the installation video.

Installation instructions require a sand base/fine gravel pad and minimum 100mm thick and 300mm bigger than the actual diameter of the tank. 

The base needs to be compacted and level as when full, the 30000 lt tank will weigh 30 tonne.

Plastic tanks have lower transportation costs (our tanks larger than 10000 lt are delivered free!). 

Installation is easier and lower cost.
No need for heavy equipment to move/install.
Longer lifespan - concrete cracks when the ground shifts, and plastic is more forgiving, meaning they generally last longer than concrete!

Naturally black will attract more heat than a more neutral colour. 

The most popular colour we sell is mist green (80% of our tanks sold) - this is a very durable colour and does not attract excessive heat.

XPRESS tanks have a 10 year warranty.

This is the industry standard warranty for smooth walled tanks.

Smooth walled tanks should not be buried. As with all smooth walled tanks your warranty will be void if you bury the tank and the side wall collapses due to external pressure.

PROMAX corrugated tanks have a 20 year warranty.

PROMAX tanks can be buried up to 1 metre in the ground and still retain their 20 year warranty.

Speak to one of  our salespeople, so we can recommend the best option. 

Yes we have a wide range of tank fittings available.

See the Rain Harvesting and Accessories section.

All Big Tanks (10,000 lt and over) are delivered FREE to your property.

Please note - this may exclude some remote areas and outer islands (eg: Waiheke).

Drivers allow half an hour on your property to deliver the tank - if you require the driver to spend more than half an hour at your property delivering your tank, an additional charge will be applicable.

We recommend contacting your plumber - he can advise on planning the project and ensuring your plans will work.

Click here to download Promax Big Tank Installation Guide PDF.

Click here to download Underground Tank and Septic Tank Installation Guide PDF