16000 Litre Carat Garden Comfort Rainwater Harvesting System
Product code
From £5,708.72 Exc VAT (£6,850.46 Inc VAT)
Product Description
The 16000 Litre Carat Garden Comfort Rainwater Harvesting System from GRAF is a garden watering system built around a Carat XXL underground tank. It suits market gardens, golf course greens and commercial grounds, giving you a large store of free rainwater that comes out of a tap or hose at the push of a lever.
As a guide, British Standard BS 8515 suggests a tank of around 5% of the rain your roof collects in a year. On an average UK roof, that therefore makes the 16000 litre tank a good match for a roof area of roughly 535 square metres.
How the Carat Garden Comfort System Works
Rain from your roof runs through the basket filter on its way into the tank, which removes leaves and debris. As a result, the stored water stays clean and the overflow syphon skims off floating matter each time the tank fills.
The Divertron X 900 submersible pump sits inside the tank and draws water through a floating intake just below the surface, where the water is cleanest. Because the pump is pressure activated, it starts as soon as you open a tap or turn on a hose and stops again when you close it.
Key Benefits
- Free rainwater for gardens, lawns, vegetable beds and washing down
- Pressure activated pump, so there are no switches to remember
- Pump and pipework hidden below ground, so the garden stays tidy
- Rainwater is soft and free of chlorine, which is better for plants
- Reduces reliance on metered mains water and hosepipe bans
What’s Included
- 16,000 litre Carat XXL underground tank
- Telescopic dome shaft with 150kg pedestrian lid
- Integrated basket filter
- Divertron X 900 submersible pump with pressure control
- Floating intake filter
- Overflow syphon
- 25m roll of pressure pipe
Not Supplied
- 100mm duct pipe for the pump hose and cables
- 100mm inlet drainage pipe from the downpipes
- 100mm overflow pipe to a soakaway or surface water drain
- Electrical connection (a qualified electrician should carry this out)
Specification
- Capacity: 16,000 litres (approx. 3,520 gallons)
- Tank: GRAF Carat XXL tank with a ribbed body designed for deep burial and heavy ground loads
- Tank dimensions: 4590 x 2500 x 2550 mm (L x W x H, before dome shaft)
- Tank weight: 790 kg
- Loading: Pedestrian as standard, vehicle with the optional traffic lid
- Warranty: 15 years on the tank, 2 years on parts
- Not suitable for drinking water
- Manufacturer: GRAF UK
Optional Extras
- Traffic Telescopic Lid 3.5 Tonne, for driveways, yards and car parks
Delivery
We deliver the 16000 Litre Carat Garden Comfort Rainwater Harvesting System free to UK mainland addresses. The tank arrives on a lorry, so you will need to be able to offload it on arrival. In addition, drawings, data sheets and installation guides are available to download on this page.
Delivery and Returns
Delivery Information
Shipping costs for standard postcodes within UK Mainland are calculated at checkout when a postcode is entered.
Delivery charges are based on current manufacturer and courier rates. In some cases, delivery costs may be subject to confirmation after an order has been placed due to supplier delivery zones or freight changes. If an additional delivery charge applies, the customer will be notified before the order is dispatched and given the option to proceed or cancel the order for a full refund.
Some areas may incur additional charges, including:
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Scottish Highlands and Islands
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Isle of Wight, Channel Islands, Isle of Man, Anglesey, Western Isles, Shetland Islands, Orkney Islands, Isles of Scilly
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Northern Ireland
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Republic of Ireland
Additional charges may apply for postcodes in these areas:
AB, BT, CA, CT, DD, DG, EH, FK, G, GY, IM, IV, JE, KA, KW, KY, LD, LL, ML, PA, PH, PO 30–41, SA, SY, TD, TN, TR, ZE
If your postcode is listed above, please contact us before ordering for a shipping quote.
Some products are only available for delivery within England & Wales; this will be stated on the product page. If you are outside this area, please contact us for a quotation.
Delivery Lead Times
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Refer to individual product pages for expected delivery times.
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Custom orders may take longer; please enquire before ordering.
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Items on the same order may be delivered separately due to stock locations.
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If delivery is delayed, we will notify you via email.
Delivery Method
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All deliveries are kerbside unless stated otherwise.
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For larger items, customer offloading may be required.
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Someone must be available to receive and inspect the goods.
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Goods may be left in a safe place at the customer’s risk; Online Tank Store cannot accept responsibility once goods are left.
Note: By signing for the goods, you confirm that the outer packaging is intact and free from visible damage. Any visible damage must be noted on the delivery paperwork or the delivery refused.
Scheduled delivery times may be accommodated; please add instructions in the Customer Notes section at checkout.
Missing or Faulty Items
If items are missing or arrive damaged:
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Contact us within 48 hours of delivery at [email protected]
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Provide:
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Order number
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Photos of the goods
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Brief description of the issue
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We may require images for the manufacturer to provide replacements.
Delivery Charges & Returns
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Ensure the product is the correct size and suitable for your intended use.
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Standard tanks (no customisation) are returnable but subject to a restocking charge and must be returned in A1 condition. Returns may be expensive due to size and weight; please check before ordering.
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Failed delivery attempts: After one unsuccessful delivery attempt, items will be returned to the depot, and redelivery charges may apply.
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Special or custom tanks are non-returnable. If the wrong product is ordered or the item is no longer required, it cannot be returned, and no refund will be issued.
Returns & Refunds
Our full returns and refund policy can be found by clicking here.
It is important to us that the items you order are correct for your needs however, we understand that situations and requirements can change. It can be costly to return an order so please ensure you are certain of your requirements before you order and that you have read the returns policy above for details.
Custom Tank – An order is considered ‘custom’ when a non-standard configuration or colour is requested. Custom orders are not eligible for return so please ensure the product is what you require before ordering. By purchasing, you are agreeing to the above terms.