Atlantis Single Stage 4400 Litre Washdown Separator
£1,757.51 Exc VAT (£2,109.01 Inc VAT)
Delivery 2 – 5 Working Days
FREE UK Mainland Delivery
Product Description
Atlantis Single Stage 4400 Litre Washdown Separator
The Single Stage 4400 Litre Washdown Separator is a large-capacity underground wastewater treatment system designed for commercial vehicle wash bays, fleet maintenance depots and industrial washdown facilities. Engineered to separate silt, sediment, oils and hydrocarbons from contaminated wash water, it helps protect the drainage network by reducing pollutants before they enter the foul drainage system.
Manufactured in the UK from high-strength rotationally moulded polyethylene (HDPE), this separator combines exceptional strength with a lightweight construction for easier transportation and installation. Its shallow dig design helps reduce excavation work, making it ideal for sites where installation depth is limited or groundwater levels are higher.
With a generous 4,400-litre capacity, this single stage separator is well suited to busy commercial wash facilities generating larger volumes of contaminated wash water. Large access openings also allow for easy inspection, cleaning and routine maintenance, helping to ensure reliable long-term performance.
Suitable For
- Commercial car wash facilities
- Vehicle valeting centres
- Fleet maintenance depots
- HGV and commercial vehicle cleaning
- Agricultural machinery wash bays
- Plant and equipment cleaning
- Pressure washing contractors
- Tool hire depots
- Industrial washdown facilities
How Does a Single Stage Washdown Separator Work?
Contaminated wash water enters the separator where heavier particles such as mud, grit and silt naturally settle within the chamber. Oils and hydrocarbons separate from the water and are retained inside the tank before cleaner water is discharged into the drainage system.
This process helps reduce pollutants entering the drainage network while protecting downstream pipework from excessive sediment build-up.
Key Features
- 4400 litre underground washdown separator
- Designed for commercial vehicle wash and industrial cleaning applications
- Separates silt, sediment, oils and hydrocarbons
- High-strength rotationally moulded HDPE construction
- Lightweight for easier transportation and installation
- Shallow dig design helps reduce excavation costs
- Suitable for areas with higher water tables
- Easy access for inspection, emptying and maintenance
- Manufactured in the UK
Optional Extras
- Telescopic Neck – Extends the existing turret by approximately 300mm to 800mm for deeper installations.
- Pedestrian Lid Cover – Suitable for installations accessed by foot traffic only.
- Vehicle Rated Lid Cover – Designed for installations beneath driveways and areas subject to vehicle traffic.
- Silt Alarm – Monitors silt levels within the separator and provides an early warning when maintenance or emptying is required, helping maintain efficient system performance.
- Hydrocarbon Alarm – Monitors oil and hydrocarbon levels within the separator, providing an early warning to help protect the drainage system and support planned maintenance.
Important Information
Waste collected from vehicle washing and cleaning operations may be classified as contaminated waste. Any accumulated silt, oils and hydrocarbons should be removed and disposed of responsibly by a registered waste carrier at an appropriately licensed waste management facility.
Product Specification
| Dimensions | L 4510 x W 1260 x H 1360 mm |
|---|---|
| Manufacturer | |
| Flow Rate | 20 Litres per minute |
| Material |
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.