Unique advantages:

• Largest and strongest underground PE tank in the world!
• Supports up to 8 Tons of Axle Weight and 12 Tons Max Total Load
• Variable burial depth: 32" to 47" (59" Max. with optional dome extension and "Maxi" telescopic riser)
• Unique in the world! – a global innovation: unique manufacturing process produces the highest stability using latest techniques
• Unique fit accuracy of the components thanks to new production process
• Consistent quality due to TÜV safety testing and production monitoring
• Vehicle-bearing (with telescopic cast iron manway kit)
• Groundwater stable up to the middle of the tank due to extremely rigid construction
• Secure investment with market leading 15-year warranty
• Made from high quality Duralene; easy to recycle
• Can be expanded as required
• 31.5" Manway opening

Application:

• The global innovation – the new tank generation of the Carat rainwater underground tanks have been specially developed for rainwater harvesting
• Frost-proof installation underground
• Groundwater stable up to the middle of the tank due to extremely rigid construction

The tank that turns its head for you The GRAF Carat S underground tank has a rotating tank dome. The tank dome can be aligned with the connections independently of the tank – this makes installation much easier! All installation pipes are connected using the five standard lip seals. The Carat S telescopic dome shaft connects the system to the ground surface. The height of the tank can be smoothly adjusted to suit the local conditions and it can be tilted by 5°. The whole system is flush with ground level.

Available Options:

Optional Optimax Pro® Internal Filter Package

Includes Optimax Pro Internal filter kit with calming inlet, overflow siphon, spannfix connection sleeve and downpipe.

Vehicle Loading Option - $299.95

Includes heavy duty telescopic dome shaft and cast iron lid for vehicle loading up to a maximum axle loading of 8 tons and total vehicle loading of 12 tons.