Graf are one of Europeand#039;s leading manufacturers of Sewage Treatment Systems. We offer the One 2 Clean system in 6 different size options.The main benefits of the One 2 Clean system are as follows;Single Tank, Single Chamber Construction15 Year Tank and 3 Year pump blower guaranteeRobust, Hardwearing DesignLow Energy UseNo mechanical / electrical parts or submersed pumps in the waste waterVery low sludge contentGraf STPand#039;s are supplied as standard with a gravity fed outlet option. If pumping of the clean outflow is required the pump option 5-POC or 9-14POC should be added (depending upon which size treatment plant is selected).For a more detailed view please click here to download the Graf One 2 Clean detailed brochure.This item has an expected delivery time of up to 7 days.If you donand#039;t have offload facilities onsite, please contact us so we can arrange for a suitable vehicle to be sent (this may incur an extra cost).Please Note: Our sewage treatment plants do not qualify for our spend andamp; save volume discounts.