Rainwater harvesting is the process of collecting and storing rainwater in order to use it for landscape irrigation, wash applications, ornamental pond and fountain filling, cooling tower make-up water or urinal flushing. With GRAF rainwater harvesting systems, the large pieces of dirt will be removed from the collected rainwater and the filtered rainwater will be disinfected.

These types of underground rainwater harvesting systems from GRAF can save up to 50% of rainwater:

1. Platin tank

•  Available in sizes of between 1,500 and 7,500 l
• Has a low installation depth so it can be installed in a short time and the installation cost cheap
• Can be easily transported due to low weight
• Has an extremely stable design so the groundwater-stable is up to the tank shoulder
• Can be extended in any way
• Has an integrated filter technology due to the tank filter packages
• Suitable for vehicle loading (in combination with a Telescopic dome shaft with cast iron lid)
• With 15 years warranty

2. Platin XL flat tank

• Available in sizes between 10,000 and 15,000 l
• Its rotating tank dome helps to easily align the connecting lines
• Has an available second tank dome for option
• Suitable for HGV loading up to a vehicle weight of 30 t (66138 lbs)
• Has a flexible connection up to DN 300 (12")
• Connection openings with prefitted DN 150 (6") lip seals
• The tank is only 125 cm (4' 1") in height so it doesn’t require a long installation time
• Installation cost is not expensive
• Has a high-quality, integrated DN 150 (6") filter technology
• Its dome opening has stainless steel profile for precision fit and secure mounting
• The connection fits up to DN 200 (8"), on tank dome of up to DN 300

3. Platin XXL flat tank

• Available in sizes between 20,000 to 65,000 l
• Its rotating tank dome helps to easily align the connecting lines
• Has an available second tank dome for option
• Suitable for HGV loading up to a vehicle weight of 30 t (66138 lbs)
• Has a flexible connection up to DN 300 (12")
• Connection openings with prefitted DN 150 (6") lip seals
• The tank is only 125 cm (4' 1") in height so it doesn’t require a long installation time
• Installation cost is not expensive
• Has a high-quality, integrated DN 150 (6") filter technology
• Its dome opening has stainless steel profile for precision fit and secure mounting
• The connection fits up to DN 200 (8"), on tank dome of up to DN 300

4. Platin package house ECO-Plus

• Suitable for pedestrian loading
• The low-cost complete solution that can also be used in the garden and at home
• Includes in the package: Platin flat tank + Maxi telescopic dome shaft with lid, suitable for pedestrian loading + Platin package 3 + Eco-Plus technical package
• Available in two versions: ped. loading and vehicle loading
• Has a self-cleaning integrated filter technology
• Can produce a clean drinking water supply for home
• Controlled by floating switch
• Its modular components help to make it easier to install
• Only has one cover visible at the surface