Graf Platin 400 Gallon Underground Rainwater Cistern
The Easiest Way to Start Harvesting Rain, No Deep Digging Required
Need water storage but don’t want to rip up your yard? The Graf Platin 400 Gallon Underground Cistern gives you exactly what you need, compact size, quick install, zero compromise. It’s built for shallow burial, performs in high groundwater, and is guaranteed not to collapse when empty.
You get a 14" telescopic riser, a 26" manway, and a childproof PE lid that locks in safety while keeping your system flush to the ground. It’s even ready for vehicle loading and internal filtration upgrades if you want to scale later.
This is the fastest, smartest way to lock in 400 gallons of usable water, without overpaying or over-digging.
Warranty: 15-Year Manufacturer Guarantee when installed according to specifications.
The Tank Guaranteed Not to Collapse When Empty* * When installed in compliance with manufacturer's installation instructions.
Platin Tank Features
- 15 Year manufacturer's warranty
- Minimal installation depth
- Suitable for vehicle loading (when combined with cast iron lid option)
- Groundwater stable to the tank shoulder
- Internal pre-filtration option
- Grass green telescopic riser and latching lid included
- Easy to transport and install
- Convenient 26" manway opening
- Easy-open access in lid for garden hose connection
- 425 fully-usable gallons
Ease of installation
Minimum installation depth greatly reduces installation time and cost, while modular components and integrated filter technology make the system easy to assemble.
Ultra-high strength materials and design enable a wide variety of installation options like high groundwater tables, underneath driveways and areas where rock and other obstructions prevent deeper burial.
Telescopic riser tilts up to 5°, making it easy to match existing grade
Optional Accessories
Internal Minimax Pro Filter Option
Specially designed for rainwater harvesting, the Graf Minimax Pro internal self-cleaning filter handles debris from roof areas up to 3,750 sq. ft.
Greatly simplified installation
Only one lid in the yard
Provides over 95% water yield
Self-cleaning
Very low maintenance
Optional Opticlean sprayhead available
Internal Basket Filter Option
The internal basket filter provides 100% water yield for installations where every drop counts. Filter handles debris from roof areas up to 3,750 sq. ft.
Greatly simplified installation
100% water yield
Convenient lift-out handle
Easy access for cleaning under tank lid
Vehicle Loading Option
Includes heavy duty telescopic dome shaft and cast iron lid for vehicle loading up to a maximum axle loading of 2.2 tons.
Return and Refund Policy
If you are not satisfied with your purchase, please send an email to support@thefountaindirect.com or call us to request a Return Material Authorization (subject to manufacturer approval) prior to returning any merchandise. Requests for returns on standard, non-special-order items may be made within 30 days of the item's ship date.
In order to provide our customers the highest quality products at the lowest possible prices, we only accept returned merchandise in "factory new” condition. We must be able to resell the product as new in the condition it is returned to us.
