£5,513.62 – £10,839.82 inc VAT
The Indirect-supply system is designed to support WCs, washing machines, irrigation and outside cleaning purposes. Rainwater is collected from the roof of the property and is fed into the underground tank via the downpipes. On entry to the tank, the water passes through a filter, to prevent any debris from going into the tank. With this system, there is a pressure-sensitive pump located in the underground tank. When a valve or tap is opened, water will be pumped under pressure until the valve is closed, allowing for the system to repressurise turning the power off to the pump.
From the header tank, the water is gravity fed to the WCs etc. It is all automatic, whenever there is a demand for water i.e. when the toilet is flushed the harvested rainwater will be gravity fed to the toilet from the header tank and then the header tank is topped up by the pump inside the underground tank. In periods without rainfall, the water level inside the underground tank will drop. When the rainwater level is too low the pump will stop pumping harvested rainwater to the header tank. This in turn will result in the rainwater level in the header tank dropping.
Inside the header tank, there is a floating ball valve which controls the top-up of mains water in periods with no rain. This means that the system maximises the use of all available rainwater. If the system is to be used for garden irrigation, an outside tap should be installed on the pipework directly off the pump. A T-junction can be used to achieve this. This will mean that the garden tap is then being supplied by direct pump pressure. (NB: when the tank is low on rainwater there will be no mains water top-up to the outside tap.)
Indirect-supply Rainwater Harvesting system package, comprising of:
• Simple & quick to install
• Submersible pump supplies harvested rainwater on demand to the header tank where it is then gravity-fed to the WCs & washing machine
• The header tank controls the operation of the system, supply of harvested rainwater and backup mains water to the WCs
• Dual valve system within the header tank prioritises rainwater supply over mains water, maximising the use of all available rainwater to save on mains water consumption
• Mains water switchover point is at a lower level in the header tank and becomes operational when rainwater is not available from the underground Platin tank
• Mains water backup supply is not reliant on the power supply or pump pressure and therefore guarantees the supply of water to WCs at all times
Platin Tank Dimensions & Weights (10000L – 25000L)
Platin 10000L Shallow Dig Tank | Download
Platin 15000L Shallow Dig Tank | Download
Platin 20000L Shallow Dig Tank | Download
Platin 25000L Shallow Dig Tank | Download
A New Dimension in Rainwater Management | Download
Platin XL Install and Maintenance Guide| Download
Platin XXL Install and Maintenance Guide| Download
PE Mini Lid (Pedestrian Loading 371010) | Download
PE Maxi Lid (Pedestrian Loading 371011) | Download
Cast Iron Maxi Lid (Vehicle Loading) | Download
Extension Sleeve (371003) | Download
Extension Sleeve (371015) 1000mm | Download
PLATIN XL Installation and Maintenance Instructions | Download
PLATIN XXL Installation and Maintenance Instructions | Download
This informative guide covers the following:
Read the Guide | Download
Platin Tank Dimensions & Weights (10000L – 25000L)
Platin 10000L Shallow Dig Tank | Download
Platin 15000L Shallow Dig Tank | Download
Platin 20000L Shallow Dig Tank | Download
Platin 25000L Shallow Dig Tank | Download
Platin Garden Comfort Schematic Layout | Download
Platin Indirect Schematic Layout | Download
Platin Silentio Schematic Layout | Download
Platin Direct Schematic Layout | Download
Platin Eco-Plus Schematic Layout | Download
Carat Indirect Schematic Layout | Download
Carat Silentio Schematic Layout | Download
Carat Direct Schematic Layout | Download
Carat Eco-Plus Schematic Layout | Download
Carat Garden Schematic Layout | Download
Carat XL XXL Indirect Schematic Layout | Download
Carat XL XXL Silentio Schematic Layout | Download
Carat XL XXL Direct Schematic Layout | Download
Carat XL XXL Eco-Plus Schematic Layout | Download
Carat XL XXL Garden Comfort Schematic Layout | Download
A rainwater harvesting system will cut your home's demand for drinking water by up to 50% and therefore also protect the environment. But how much time do you have to factor in for operating and maintaining such a system? GRAF rainwater harvesting systems are designed so that only very few of the components need checking. This film shows which components need maintaining and how often. The intelligent components deliver perfectly clear rainwater with minimum maintenance effort, enabling you to save drinking water and time.
Extension Sleeve (371003) | Download
1000mm Extension Sleeve (371005) | Download
Infiltration Tunnel | Download
One2Clean Discharging to Tunnels (Excavation Layout)| Download
Rainbloc Specification (2020 version) | Download
New Rainbloc Instructions | Download
Distribution Shafts Flyer | Download
GRAF WWT UK Brochure | Download
GRAF One2Clean Benefit Flyer | Download
Catalogue: Portable Water Solutions | Download
Graf UK has a national service provider network of contractors who can offer various services for our rainwater harvesting & wastewater treatment systems.
See this link for a UK map showing companies who can offer installation for your Graf rainwater harvesting system, just enter your postcode to highlight the companies in your area.
Setting up the pump & filter packages for the Garden Comfort systems is relatively straightforward if you follow the installation guide.
If you require assistance you can contact ‘The Rainwater Guy’, who is an accredited service provider for Graf UK for commissioning, installation of controls & maintenance of our rainwater systems.
We’re still delivering to our customers safely via our own delivery vehicles & drivers in the main, using external hauliers when required.
This gives us much greater control & flexibility over our deliveries.
All orders are typically delivered within 5-7 working days from receipt of order, however during this time due to UK-wide disruption, some deliveries may take a little longer and we would still aim to deliver within 10 days.
• Delivery lead time is 5-7 working days on all orders, unless otherwise advised.
• Price includes delivery to mainland UK.
• Please check for deliveries into Cornwall, Mid & Northern Scotland & Isles as additional delivery charges may be applicable.
• We cannot currently provide a tracking number for all orders but can accept customer enquiries by phone.
• Off-loading by the customer unless agreed otherwise.
• Tanks are generally strapped to a pallet for fork lift off-load, slings can also be used.
• Please advise if there is restricted access to site or special delivery instructions.
