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4000 Litre Rocko Water Storage Tank

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4000 Litre Rocko Water Storage Tank

SKU: RT-6727

Availability: Due in 3-4 Weeks

Product Description

The Rocko 4000 litre above / below ground tank is perfect for your rainwater harvesting system.

The Rocko tanks come in a range of sizes from 1,200 to 10,000 litres, so you will always find a tank to suit your needs. Roto are a leading manufacturer in rotomoulded products and have over 40 years experience in producing tanks.

Why choose a Rocko tank?

  • The Roto Rocko tank is a one piece rotomoulded tank with a flat bottom for above ground placement.
  • Quick & easy to install.
  • Inflow & outflow pipes can be up to DN160mm.
  • Ribbed tank with 8-14mm thickness for added strength.
  • 800mm cover for easy access (600mm for below ground).


  • ISO 9001 : 2008
  • ISO 14001

With a focus on product quality and efficiency to deliver a superior product, the material of the tank is made from MDPE which is recyclable, strong and made in one piece.


Please follow the instructions of fitment which Roto provide. This will allow the tank to perform and last many years without any issues. If you would like a copy of this beforehand, please just ask.

What do I get?

  • A strong one piece rotomoulded tank.
  • Plastic pedestrian loading cover.
  • Rubber washers for pipe fitment.

Additional products available:

  • Pump
  • Additional Extension for Lid
  • Filter System
  • Driveable Cover - Please check fitting instructions for driving over the tank.
  • Control Unit
  • Ultrasonic Electronic Level Gauge

Please Note: Due to the quaility of the tanks, they can become very heavy when ordering the bigger sizes - tanks go from 50kg to 306kg. So when ordering, please make sure you arrange the safe offloading of the tank - this is the responsibilty of the purchaser. Failure to deliver resulting in no offloading arrangements could incur extra charges.  

More Info

Water Capacity (litres) 4000
Material Polyethylene
Maximum Overall Diameter (mm) 1800
Maximum Overall Height (mm) 2700
Net Weight (kg) 155
Lid Available Yes, Included 600mm or 800mm
Colour Grey
Above / Below Ground Tank Above / Below
Filtre Included No
Home Assembly Yes. Inlet/Overflow Pipe (Not Included) Requires Fitting
Warranty 5 Years - Please Follow Fitting Instructions
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