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18 Person Graf One2Clean Sewage Treatment Plant (Gravity)

Regular price
£4,198.36 (£3,498.63 ex VAT)
Regular price
Sale price
£4,198.36 (£3,498.63 ex VAT)
Est. delivery 7-10 working days
Loading Lid


The 18 person One2Clean sewage treatment plant by Graf is the ideal sewage solution for off-mains drainage. Only one pumping process is required. Available with a pedestrian or vehicle loading lid, this product can be installed in domestic and commercial applications. In addition, this sewage treatment plant has an efficiency factor of up to 99%!

This sewage treatment plant is suitable for use with up to 18 people. The total volume is 13,000l which is comprised through 2 x 6,500l tanks.

Extended 3 year warranty on product technology and a 10 year warranty on the tank itself.

Highly recommend the Graf External Plastic Cabinet to be purchased with this product.

Free UK mainland delivery

Call 0121 351 3230 to claim your free commissioning with this tank. Terms and conditions apply.

View data sheet here

Claim free commissioning here

Full Description

This 18 person One2Clean sewage treatment plant by Graf offers an efficient solution to off-mains effluent treatment. It arrives as a set of 2 x 6,500l tanks which makes the total capacity 13,000l. Customer is responsible for offloading.

How does the treatment process work?
There are 3 stages to the treatment process:
1 - aeration
2 - settling phase
3 - clear water extraction.

This ensures that the sewage is treated to a high standard, and is suitable to be discharged safely at the end of the process.
The sewage enters the tank and is filtered using an aeration process. The sludge then settles at the bottom of the tank, and the remaining clear water is extracted and drained in a soakaway or other drainage method. This means that there is minimal sludge to be removed, and only one pumping process is required, meaning maintenance costs are kept low.

- Up to 99% efficiency
- Low-energy consumption
- Free commissioning available
- 3 stage treatment process
- Quiet operation
- Free delivery

There is also a double sludge storage volume which means that more time can pass before a sludge removal is required. The tank is 100% resistant to corrosion which means that its lifespan is optimised, as it is resistant to the elements.

Technical Specification

Capacity (litres): 13000l

Weight (kg): 440kg

Height (mm): 2390mm

Width (mm): 2190mm

Length (mm): 5380mm

Contact Us

Our team of experts are available and ready to speak to you. You can contact us or call us directly on 0121 351 3230. Available Mon-Friday 8am-5pm.

Further questions?

Our team of specialists are here to help. We install many of our products so can provide real-world advice. We also offer a free take-off service if required.

Make an enquiry