GRAF easyRock 4 Person Non-Electric Sewage Treatment Plant
Product code
From £3,667.81 Exc VAT (£4,401.37 Inc VAT)
Product Description
The GRAF easyRock 4 Person Non-Electric Sewage Treatment Plant is a two-tank treatment system that runs with no power at all. It suits a small home, a holiday cottage or a lodge that has no mains drainage and no easy power supply near the plant.
With a maximum flow of 600 litres a day, it is the right size for a one or two bedroom property. For a typical family home, the 5 or 6 person model gives more headroom.
How the easyRock Works
The easyRock 4 Person Sewage Treatment Plant treats wastewater in three stages, with no power at all. First, sewage flows into the primary settlement tank, where heavy solids sink to form sludge and lighter matter floats to the top.
Next, the settled water passes through a built-in pre-filter, which catches any fine solids that are left. Finally, the water spreads evenly over the GRAFRock filter media in the treatment tank. Natural bacteria grow on the large surface of the GRAFRock and break down the pollutants, so clean water flows out to the drainage field or watercourse.
Key Features
- No electricity, so there are no running costs and nothing to fail in a power cut
- No compressor and no moving parts, so the plant is completely silent
- Extra-flat design with an inlet depth of 380 to 510 mm, so the dig is shallow
- Extension sets take the inlet depth down to a maximum of 1040 mm
- Pack (side by side) or Line (in series) layout, which you can choose on the day
- Anchoring system for sites with a high water table
- GRAFRock mineral filter media for reliable treatment
What’s Included
- Primary settlement tank with built-in pre-filter
- Treatment tank filled with GRAFRock filter media
- Pedestrian lids
- Connection pipework between the two tanks
Options
- Raised outlet with lift pump station, for sites where the treated water cannot flow away by gravity. The pump station comes with a factory-fitted pump and a level alarm, and needs a power supply.
Where Can the Treated Water Go?
Treated water from the plant can usually discharge to a drainage field or, in many cases, to a ditch or stream. In England, the General Binding Rules set out when you can do this without a permit, so check the rules for your site or speak to the Environment Agency before you order. In Scotland, Wales and Northern Ireland, the local environment regulator sets the rules.
Specification
- Population: up to 4 people
- Maximum daily flow: 600 litres
- Total volume: 1,800 litres
- Dimensions (Pack layout): 2275 x 2280 x 1490 mm (L x W x H)
- Weight: 280 kg
- Power: none needed for gravity outlet
- Colour: Grey and green
- Manufacturer: GRAF UK
Commissioning and Delivery
A GRAF engineer commissions the plant at no extra cost once it is installed. We deliver the easyRock 4 Person Sewage Treatment Plant free to UK mainland addresses. However, the plant arrives on a lorry, so you will need to be able to offload it on arrival. You can also download the drawing, brochure and user guide from 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.