Otto Graf GmbH products

The Platin flat rainwater tank was specially developed for rainwater harvesting. It is available in sizes of between 1,500 and 7,500 l. It features a minimum installation depth which translates into a short installation time and low installation costs.

The new tank generation of Carat rain-water underground tanks have been specially developed for rain-water harvesting.

The GRAF SBR wastewater treatment system Klaro E Professional works according to the principle of SBR lifting technology. No live parts need to be installed in the tank. All movement processes are performed by three air lift pumps, which are operated using a compressor. The compressor also provides the plate ventilator on the bottom of the SBR reservoir with air.

Allows up to 100 % water yield. Space-saving filter technology inside the tank. The filter housing can be easily removed without tools. Ideally suited when connecting the tank to a soakaway. 275 mm offset height between inlet and outlet. Can manage roof areas up to 350 m². Standard 100 mm connections. Emergency overflow system available (optional extra). Sieve set mesh width 0.35 mm (0.01`).

Efficient cleaning system with high water yield, Provides over 95 % water yield, Low maintenance (self-cleaning), Space-saving filter technology inside the tank, Filter housing can be easily removed without tools, Transparent lid for filter visibility, Can manage roof areas up to 350 sqm, Standard 100 mm connections, Self cleaning Opticlean system available as an optional extra, Low offset height of 165 mm between inlet and outlet.

The third generation of GRAF infiltration and attenuation system. BBA Agrément Certificate Number 15/5200 and Komo certified.

Platin drinking water reservoir; Food-safe tank for storing drinking water; To store drinking water. Tank made of sturdy, durable polyethylene. Food-safe model with test certificate. Easy to clean thanks to smooth inner surfaces. 15 years warranty.

For overground and underground installation. Stability tested according to European standard (DIN EN 12566-1). Construction approved by DIBt for domestic wastewater. Groundwater stable. Fits through any door (≥ 80 cm) – each half shell weighs just 30 kg. Fast tank fitting with profile seal and fast connectors. Tanks can be used as rainwater harvesting systems after thorough cleaning. Can be expanded as required. Durably sealed thanks to solid profile sealing (Sealing life-time of more than 25 years proven in laboratory tests).

The Graf Infiltration Tunnel has been mainly designed for the use in private and rural areas. The system, which consists of one or more tunnel modules and two end plates, can be extended as desired. The tunnel is laid in one or more lines of the same level. As the weight of one module is only 11 kg, the handling of the Infiltration Tunnel is excellent. The surface above the tunnels is suitable for vehicle loading, offering varied possibilities for use.

Large Biological Wastewater Treatment Plants up to 1000 inhabitants for the Carat XXL. System conformity: ATV A-122. Purifying technology: fully biological SBR lifting technology. XXL systems available up to: 1000 inhabitants | 150,0000 l/d. Maintenance interval: 2 – 4 per year. Warranty for underground tank: 10 years. Warranty for purifying technology: 2 years.