Expert and Friendly Advice
Free Delivery Available
Installation Service

Graf One2Clean Sewage Treatment Plant 9 Person

This Graf sewage treatment plant is perfect for a 7-8 bedroom property.

Graf Medium Plastic Cabinet

SKU: G50004 Categories: , ,


This 9 person One2Clean sewage treatment plant from Graf boasts a robust injection moulded tank.  Through a process of aeration and sedimentation the plant treats the wastewater so that it can be discharged into a stream or watercourse.

It is a reliable and eco-friendly solution to dispose of your wastewater as it dispenses with the unnecessary extras, making it a cost-effective solution.

Key benefits:

  • Less energy consumption and less wear
  • No mechanical elements in the waste water
  • No pumps in the waste water
  • No electrical components in the waste water
  • Incredibly little sewage sludge

This kit price includes as standard:

  • A 6,500l tank
  • A mini tank dome and mini telescopic dome shaft suitable for pedestrian loading*
  • Baffle
  • A control unit for indoor installation (for external installation a cabinet is required)
  • Technical set up kit
  • 20m hose

*Optional extra: vehicle loading up to 3.5t, maxi tank dome, cast iron cover and a telescopic dome shaft


2 years warranty on technology (compressor and parts)

10 years warranty on the tank

Options available:

External pumped outlet in a separate chamber

Heavy Duty cover – vehicle loading up to 3.5t with a maxi tank dome, cast iron telescopic dome shaft

Neck Extension – working height 305mm (total height 400mm)

Offloading is the responsibility of the customer

People (Max.) Max. daily inflow
Volume (litres) Length (mm) Width (mm) Height total (mm) Weight (kg)
Standard Cover 9  1,350 6,500 2,390 2,190 2,530-2,730 265
Heavy Duty Cover 9  1,350 6,500 2,390 2,190 2,850-3,050 295