50000 Litre Round Water Tank



50,000 Litre Round Water Tank 

SKU: RWT50000

The 50,000 Litre Mega Tank is our largest Polymaster round water tank in our range.  Manufactured in one piece, it has no joins, seams or part lines and we do not remove the top of the tank for transport.

Product Documents

Lead Time: 2-3 weeks

None 65mm CFA Coupling +$640.00
None ASC J40/60 | 40m Head | 60LT/min +$350.00 ASC J50/100 | 50m Head | 100LT/min +$565.00 ASC M60/120 | 60m Head | 120LT/min +$675.00 DAB ESYBOX +$1,775.00

50,000 Litre Polymaster Mega Tank

SKU: RWT50000


Diameter: 4600 mm
Inlet Height: 3290 mm
Overall Height: 3440 mm

Capacity: 50,000 litre (11000 gallons)

The 50,000 Litre ‘Mega Tank’ is our largest poly water tank in our range.  Manufactured in one piece, it has no joins, seams or part lines and we do not remove the top of the tank for transport. All our rainwater tanks are UV stabilised and available in a range of 22 Colourbond colours.

It will provide large capacity for farm storage or to increase your mains water supply for a wide range of household uses, from drinking water to garden irrigation to water for the laundry and bathroom.

When you invest in a rainwater tank it’s important that you get one that lasts and is fit for purpose.  Australian standards are put in-place to give households, peace of mind when it comes a tanks’ usability.

Standard free inclusions:

1 x Inlet strainer (mozzie proof), 1 x Overflow, 1 x 40mm Brass pump outlet.

Please feel free to give our friendly and highly qualified staff a call on (03) 8795 7715 today to discuss custom tank fittings if required.

The relevant standards to look out for (from an ISO9001 tank manufacturer) are:
  • AS/NZS4766:2006 – Polyethylene storage tanks for water and chemicals
  • AS/NZS4020:2018 – Testing of products for use in contact with drinking water
Why a Polymaster Tank?

Polymaster tanks are certified with AS/NZS 4766:2006 for water and chemicals and AS/NZS 4020:2002 for drinking water and are independently audited by SAI Global.

Polymaster are manufacturers of an extensive range of quality products for industrial, residential and agricultural applications. Over the last two decades, Polymaster has been at the forefront of industry endorsed, product certified designs that have advanced the lifespan and functional capabilities of process vessels, bulk storage, rainwater tanks and animal care products. See the video below to see why Polymaster are an industry leader.

Corrugated Design

Polymaster’s traditional corrugated wall profile cannot be substituted for strength and appearance. A well known fact is, as soon as an object receives some ribbing the rigidity increases enormously.

21 Aussie Tank Colours

Polymaster tanks comes in Australia’s favorite colours. The colours were kept in mind to complement your tank with your sheds, fences, guttering, or surrounding landscape including residential properties.

What makes Polymaster tanks the toughest?
  • Self-supporting roof design means no support poles are necessary
  • Extra thick corrugated walls for maximum strength
  • Double strength UV+ resin ensures ultimate protection against Australia’s harsh sun
  • One-piece construction with no joins, seams or part-lines
  • Certification to AS/NZ4766 tank standard
  • 22 COLORBOND® colours
  • 20 Year Manufacturers Warranty for peace of mind! *conditions apply

The clearance required for truck and trailer is 19m long, 5m high and 3.5m wide. Please ensure there are no low-hanging branches or powerlines. Please ensure the entrance to your property is wide enough and there is enough turning area (size of standard roundabout).

Current lead times

Victoria – approx 2-3 weeks



Dimensions (mm)

4600 D x 3480 H

Inlet Height


Supplied Accessories

Inlet Strainer @ 12 o'clock, Overflow Screen @ 11:30


1 x 40mm brass outlet and ball valve

Water Tank Colour

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20 Years Manufacturers Warranty



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