10000 Litre XL Underground Tank



10000 Litre XL Underground Tank


Product Documents

PE Lid with Dome Shaft Maxi DN100 (Standard Inclusion) Additional PE Lid with Dome Shaft Maxi DN100 +$600.00 PE Lid with Dome Shaft Maxi DN150 +$660.00 2 x PE Lid with Dome Shaft Maxi DN150 +$1,320.00 Class B Lid with Dome Shaft Maxi DN100 +$1,050.00 2 x Class B Lid with Dome Shaft Maxi DN100 +$2,100.00
None 100mm Joining Seal +$90.00 Riser Only +$450.00 155mm Poly Welded Fitting +$749.00 225mm Poly Welded Fitting +$749.00 300mm Poly Welded Fitting +$749.00
None Minimax 100mm Filter +$700.00 Optimax 150mm +$990.00

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*customer’s responsibility to organise unloading machinery*

10,000 Litre GARANTIA XL LiLo Underground Water Tank


Dimensions: 4900L x 2250W x 1250H

Weight: 460kg

Do you want to harvest rain water without valuable surface space being taken up by a tank? Graf’s underground water tanks are made in Australia according to a patented and leading German-engineered design that provides optimum strength and a self-cleaning filter.

They are your perfect solution and so easy to install that two friends, two shovels and one morning is all that is necessary. No ballasting is necessary for the foundation and tanks come with child proof covers.

  • Rotating tank dome to easily align the connecting lines
  • Available with a second tank dome as an option
  • Suitable for HGV loading up to a vehicle weight of 30 t (66138 lbs)
  • Flexible connection up to DN 300 (12″)
  • Connection openings with prefitted DN 150 (6″) lip seals
  • Tank height of just 125 cm (4′ 1″)
  • High-quality, integrated DN 150 (6″) filter technology
  • Dome opening with stainless steel profile for precision fit and secure mounting
  • Connection fitting of up to DN 200 (8″), on tank dome of up to DN 300

GarantiaXL / PlatinXL Installation Guide and Conditions

Coverage areas with telescopic dome shaft in green areas. (Top Picture)

Maximum coverage heights with extension and telescopic dome shaft in green areas only. (Middle Picture)

Cover heights with cast iron telescopic dome shaft (Class B) in area driven over by vehicles uo to 3.5 tonnes. (without Ground water and Stratum Water) (Bottom Picture)

Technical Data PlatinXL (Connection option DN110)

L = 4900mm
W = 2250mm
H1 = 1250mm
Htot = 2285mm

GarantiaXL / PLatinXL 10,000LT Tank Structure

Graf PlatinXL Installation and assembly

Construction site
Under all circumstances, the following points must be clarified prior to installation:
• The structural suitability of the ground
• Maximum groundwater levels which occur and drainage capability of the subsoil
• Types of loads which occur
An expert ground report should be requested from the local planning authority to determine the physical characteristics of the subsoil.

To ensure that sufficient space is available for working, the base area of the trench must exceed the dimensions of the tank by > 100 mm on each side; the distance from solid constructions must be at least 1000 mm.
If the depth of the trench is > 1250 mm an embankment must be designed. The construction site must be horizontal and plane and must guarantee sufficient load-bearing capacity.
The depth of the trench must be dimensioned so that the max. earth coverage (see section 2 – Installation Conditions) above the tank is not exceeded. To use the system throughout the entire year, it is necessary to install the tank and those parts of the system which conduct water in a frost-free area.
A layer of compacted, round-grain gravel (grain size 8/16, thickness approx. 100 – 150 mm) is applied as the foundation.

On installation of the tank in the immediate vicinity (< 5 m) of an embankment, a statically calculated supporting wall must be erected to absorb the soil pressure. The wall must exceed the dimensions of the tank by at least 500 mm in all directions and must be located at least 1000 mm away from the tank.

Groundwater and cohesive (water-impermeable) soils (e.g. clay soil)
If it is anticipated that the tanks will be immersed deeper into the groundwater than its max. immersion depth (see table), sufficient dissipation must be ensured. Dissipation of the drainage water (e.g. via an annular drainage system) is recommended in the case of cohesive, water-impermeable soils.

Connection of multiple tanks

Two or more tanks are connected via the assemble services by means of Graf special seals and basic pipes (to be provided at construction site). The apertures must be drilled to the corresponding size using only the Graf special crown bit. It must be ensured that the distance between the tanks is at least 600mm. The pipes must project at least 200mm into the tanks.



Dimensions (mm)

4900L x 2250W x 1910H (mm)


15 Years Manufacturers Warranty




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