
Graf Carat Garden Comfort Rainwater Harvester Package 6,500L with Pedestrian Lid
Graf’s new tank generation of Carat rainwater underground tanks has been specially developed for rainwater harvesting. Put simply, rainwater harvesting is collecting the rainwater that falls onto the roof of a building (either a home or a commercial building) and then capturing it inside a tank, which can be located either above or below ground.
The Graf Garden Comfort system is designed for irrigation and outside cleaning purposes. Rainwater is collected from the roof of the property and is fed into the underground tank via the downpipes.
Graf Carat Rainwater Harvester Process
- Water passes through a filter, which varies in size depending on the surface area of the roof that the rainwater is being collected from, which keeps all leaves, moss and debris that may be travelling with the rainwater out of the tank.
- Once the rainwater is held within the tank, it is then extracted for use.
- If the rainwater tank is above ground, then the rainwater can simply be taken out of the tank via a tap – as would be the case in a simple water butt.
- If the rainwater is being stored in a tank underground, then it must be extracted out of the tank using a pump. There are many types of pumps for different applications.
- Depending on what the harvested rainwater is being used for, there may also be a requirement for a mains water backup function for periods where little rainwater is collected.
Features & Benefits
- Lightweight, easy to transport
- Easy and safe assembly
- EPDM to profile sealing, lasts more than 25 years
- Consistent quality due to constant production monitoring
- Suitable for vehicle loading (when combined with the Telescopic cast iron cover)
- 2 additional hose-lock connection extraction points
| Capacity | 6500 litres |
|---|---|
| Material | HDPE / Polyethylene |
| Application | Rainwater harvesting |
Important — please read
Please ensure the product you are ordering is the correct size and suitable for the purpose. Special order, bespoke and non-stock tanks are not returnable. If you order a tank and find it is too big, too small, or unsuitable for your requirements, it can be expensive to return. Our cancellation & returns policy explains this in more detail — see Terms & Conditions.
Delivery charges
Our shipping costs cover most of the UK. However, parts of England, the Scottish Highlands and Islands (including areas north of the Glasgow / Edinburgh border), Isle of Wight, Channel Islands, Isle of Man, Anglesey, Western Isles, Shetland Islands, Orkney Islands, Isles of Scilly, Northern Ireland and the Republic of Ireland may cost more.
Please call before ordering if the delivery postcode is listed below. There may be additional shipping costs.
- AB
- BT
- CA
- CT
- DD
- DG
- EH
- FK
- G
- GY
- IM
- IV
- JE
- KA
- KW
- KY
- LD
- LL
- ML
- PA
- PH
- PO 30–41 Isle of Wight
- SA
- SY
- TD
- TN
- TR
- ZE
- Southern Ireland
Looking to avoid shipping charges?
All our tanks are available for collection ex works. Our suppliers are based all over the UK — please call if you wish to collect.
Overseas orders
International orders are welcome. Payment is by IBAN / SWIFT / BIC, MoneyGram and letters of credit. We regret that credit cards are not accepted for international orders.
A purchase order is required; we will then create a pro-forma invoice, and tanks are ordered on clearance of funds.
If you require additional export documentation — for example a Certificate of Origin, or commercial invoices certified by the Chamber of Commerce — you must notify us before completion of your order, as we will have to invoice cost and admin charges to the order.
Please call if you have any questions: +44 (0)1643 703358
Offloading
Unless a HIAB delivery has been booked at additional cost, it is the customer’s responsibility to offload with suitable equipment on the day of delivery. A failed delivery may result in additional charges.
We recommend that installers, plant hire and installation materials — excavators, aggregates and so on — are not booked until you are in receipt of the goods. Tanks Direct cannot be held responsible for costs incurred due to unforeseen delays; please see our terms for more details.
Any questions about your delivery? Contact the Sales Team on 01643 703358.
Looking to return an item?
If you wish to return goods, please complete the form on this page to provide further information.
Once your request is approved, a valid Returns Authorisation Number (RAN) will be issued to initiate the returns process along with information on how & where to return your order along with any costs involved.
Please DO NOT return any goods without this authorisation. Goods cannot be accepted without this.
Returns are not accepted at our Minehead Office, please wait until we contact you before returning any goods.
Please click here to request a return of one of our products.
Talk to a
specialist
Sizing, regulations, installation. Our team has been answering these questions for over 25 years.
Why Tanks-Direct
22 years. 100,000+ tanks. Specialists, not generalists.
Nationwide delivery
GB and Northern Ireland covered. HIAB and crane offload available. Highlands and Islands quoted on request.
WRAS & BS EN compliant
Every potable tank is independently certified. Documentation supplied with each delivery.
Best-price guarantee
4.6/5 on Feefo from 1272 verified reviews. We price-match any genuine like-for-like quote.
Specialist advice
Trade-grade phone and email support, Mon-Fri 8am-5pm. Site visits for orders over £2,500.




