Graf 6500L Carat RS Septic Tank


Price Includes VAT

Graf Septic Tanks – Quality Two Chamber Septic Tanks


Graf Septic Tanks are high quality, two chamber septic tanks fully compliant with EN12566-1

Graf Septic Tanks are suitable for domestic and commercial applications in size ranges 5Pe to 30pe

Carat RS Tanks

Graf Septic Tanks are simply a Carat RS tank with a baffle, which is an effective mechanical method of Cleaning.

Carat RS Tanks and baffles are made from 100% recycled material, manufactured using modern production methods which ensures a precisely defined and uniform wall thickness and impact resistant.

Graf Septic Tanks

Carat RS Unique Ribbed design

Due to the unique design and ribs, the tanks are ground water stable and also have a large ribbed base which adds to the stability and aids installation. The tanks also benefit from lifting eyes to aid installation.

carat RS tank

Carat RS tank large ribbed base.

Tanks are supplied as standard with a telescopic dome shaft which can be easily adjusted up to 5 degrees to suit ground conditions and a 600mm diameter green flush fitting pedestrian rated cover ensuring low visual impact.

pedestrian dome

pedestrian dome shaft.

Telescopic cast iron vehicle rated covers and concrete cast iron vehicle/lorry rated covers are available as an option.

Vehicle loading dome shaft


Extensions for shafts and domes are also available as an optional extra giving an extra 300mm depth/cover.

Graf 400mm neck riser

Graf Septic Tanks Sizes and Dimensions

Graf Septic tanks are available in four sizes, 2700 Ltr, 3750 Ltr, 4800 Ltr and 6500 Ltr

Graf Septic Tanks Dimensions


Like all septic tanks, proper ventilation is required for the system to work effectively. We would recommend the installation of a Carbon Air Vent, which allows the system to vent properly but keeps unpleasant smells at bay.

Carbon Air vent

Septic Tanks Prices and delivery

All prices shown for Graf Septic Tanks are subject to vat at the current rate 20%

Prices include delivery to UK mainland only

Additional carriage charges will apply to outlying areas, Scottish highlands and islands (call us for details)

Customer responsible to arrange safe means of offload.

Additional carriage charges.

Additional carriage charges will apply to items ordered separately. i.e neck extensions

Graf Septic Tanks Installations

For customers in Scotland we can provide a full installation service for Graf Septic tanks. Call us for details 01236 796437

Upgrading to a Sewage treatment Plant

To help further protect our environment you may consider upgrading to a sewage Treatment Plant.

We also supply the full range of Graf Sewage Treatment Plants.

Installation service available for customers in Scotland Contact us for details





Additional information

Graf Septic Tank

2700 Ltr Septic Tank Ped Lid, 3750 Ltr Septic Tank Ped Lid, 4800 Ltr Septic Tank Ped Lid, 6500 Ltr Septic Tank Ped Lid, 400mm neck extension, Carbon Air Vent, 2700 Ltr Septic Tank cast Lid, 3750 Ltr Septic Tank cast Lid, 4800 Ltr Septic Tank cast Lid, 6500 Ltr Septic Tank cast Lid