6,500 Litre Septic Tank – GRAF Carat
Product code
From £1,688.20 Exc VAT (£2,025.84 Inc VAT)
Product Description
The 6,500 Litre Septic Tank from GRAF is the largest tank in the Carat septic range. GRAF rates it for up to 30 people, which suits small developments, campsites, village halls and farm buildings with welfare facilities.
How a Septic Tank Works
Wastewater from the house flows into the 6,500 litre septic tank, where it slows down. As a result, heavy solids sink to the bottom and form a sludge layer, while fats and lighter matter float to the top. The built-in baffle holds these layers back, so only the settled liquid flows out to the drainage field. Bacteria in the tank also break down part of the sludge over time.
Because the solids build up slowly, the tank needs emptying by a licensed waste carrier from time to time, usually every one to two years depending on use. The access shaft makes this simple, so nobody needs to enter the tank.
Key Features
- 6,500 litre capacity, suitable for up to 30 people
- Built-in baffle that separates solids from the liquid
- Lightweight Carat tank, so you can install it without a crane
- Telescopic dome shaft with 150kg pedestrian lid as standard
- Optional 3.5 tonne traffic lid for driveways
- 15 year tank warranty and 50 year design life
Important: Discharge Rules
In England, a septic tank must not discharge straight into a ditch, stream or other surface water. Instead, the outlet should go to a drainage field (soakaway) that is designed for your ground conditions. If you need to discharge to a watercourse, a sewage treatment plant is the right choice. Therefore, please check the General Binding Rules, or the rules in your part of the UK, before you order.
Specification
- Capacity: 6,500 litres
- Population: up to 30 people
- Tank dimensions: 2390 x 2190 x 2190 mm (L x W x H)
- Weight: 220 kg
- Inlet and outlet: 110 mm
- Loading: Pedestrian as standard, vehicle with the traffic lid
- Manufacturer: GRAF UK
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.