Knollands Septic Tanks & Drainage

rain harvesting

Graf garden jet package

The good value complete solution for garden use including all system components. With Garden Jet pump package.

  • Good value complete solution
  • Just one cover visible on the surface
  • Integrated filter technology (100 % water yield)
  • Simple installation using prepared components

Technical Details:

Capacity length width height int. ø weight
2700 L 2080mm 1565mm 2010mm 800mm 120kg
3750 L 2280mm 1755mm 2200mm 800mm 150kg
4800 L 2280mm 1985mm 2430mm 800mm 185kg
6500 L 2390mm 2190mm 2710mm 800mm 220kg
 

The following packages consist of 2 tanks to create the overall capacity

7500 L 2280mm 1755mm 2200mm 800mm 150kg
9600 L 2280mm 1985mm 2430mm 800mm 185kg
13000 L 2390mm 2190mm 2710mm 800mm 220kg
 

100% water yield
The GRAF garden packages have a basket filter, which reliably traps particles. The filter construction guarantees a water yield of 100%.

Telescopic dome shaf
The GRAF telescopic dome shaft facilitates easy access to the tank and fi lter. It has a tank cover which is suitable for pedestrian loading and can be fitted flush with the ground. Thanks to the flush fi t, the tank cover does not get in the way of lawn mowing.

rain harvesting - garden jet package

Graf garden comfort package

The simple garden solution with submersible pump system.

  • Very easy to use
  • Pump switches on and off automatically
  • Just one cover suitable on the surface
  • Simple installation and convenient water extraction using water connection box (prepared for Gardena irrigation system)

Technical Details:

Capacity length width height int. ø weight
2700 L 2080mm 1565mm 2010mm 800mm 120kg
3750 L 2280mm 1755mm 2200mm 800mm 150kg
4800 L 2280mm 1985mm 2430mm 800mm 185kg
6500 L 2390mm 2190mm 2710mm 800mm 220kg
 

The following packages consist of 2 tanks to create the overall capacity

7500 L 2280mm 1755mm 2200mm 800mm 150kg
9600 L 2280mm 1985mm 2430mm 800mm 185kg
13000 L 2390mm 2190mm 2710mm 800mm 220kg
 

Automatic pump
The Carat underground tank package Garden Comfort has a submersible pump, which switches itself on and off automatically. Extracting water is unbelievably simple: open tap - water flows!

Practical extraction
The unique GRAF water hose connection box offers two connection possibilities. It can be installed anywhere in the garden, Simply connect your garden hose or sprinkler to the integrated Gardena® connection valve.

rain harvesting - garden comfort package

Graf eco-plus package

The ideal solution for use in the home and garden.

  • Good value complete solution
  • Patented filter technology and in-house drinking water intake
  • Easy to fit using modular technology
  • Controlled by floating switch
  • Just one cover visible on the surface

Application:

  • The good value complete solution for garden and household use including all system components
  • KG or HT pipes are the customer's responsibility
  • System has floating switch control

Technical Details:

Capacity length width height int. ø weight
2700 L 2080mm 1565mm 2010mm 800mm 120kg
3750 L 2280mm 1755mm 2200mm 800mm 150kg
4800 L 2280mm 1985mm 2430mm 800mm 185kg
6500 L 2390mm 2190mm 2710mm 800mm 220kg
 

The following packages consist of 2 tanks to create the overall capacity

7500 L 2280mm 1755mm 2200mm 800mm 150kg
9600 L 2280mm 1985mm 2430mm 800mm 185kg
13000 L 2390mm 2190mm 2710mm 800mm 220kg
 

Self-cleaning filter
The GRAF household packages use the patented Optimax-Pro Filter. This self-cleaning filter ensures a water yield of over 95% and is very low in maintenance. The filter can also be equipped with the Opticlean® cleaning unit if desired. This cleans the filter of impurities at programmable intervals. The filter reliably retains dirt with its mesh width of just 0.35 mm.

Optimum water quality
In addition to the GRAF Optimax-Pro Filter, the floating water extraction unit also ensures optimum water quality. It extracts the water at the cleanest point; approx. 10 cm below the water surface.

rain harvesting - eco plus package

Graf professional package

The convenient complete solution for use in the home and garden.

  • Professional solution
  • Patented filter technology and in-house drinking water intake
  • Easy to fit using modular technology
  • Microprocessor control system
  • Digital fill level display
  • Automatic rising intervals for the intake reservoir and the filter
  • Low visual impact

Technical Details:

Capacity length width height int. ø weight
2700 L 2080mm 1565mm 2010mm 800mm 120kg
3750 L 2280mm 1755mm 2200mm 800mm 150kg
4800 L 2280mm 1985mm 2430mm 800mm 185kg
6500 L 2390mm 2190mm 2710mm 800mm 220kg
 

The following packages consist of 2 tanks to create the overall capacity

7500 L 2280mm 1755mm 2200mm 800mm 150kg
9600 L 2280mm 1985mm 2430mm 800mm 185kg
13000 L 2390mm 2190mm 2710mm 800mm 220kg
 

Optimum water quality
In addition to the GRAF Optimax-Pro Filter, the floating water extraction unit also ensures optimum water quality. It extracts the water at the cleanest point; approx. 10 cm below the water surface. The GRAF professional package is also equipped with a reversible flow filter, which re-filters the water before it is fed into the mains supply.

Intake - reliable and whisper-quiet
The GRAF Aqua-Center-Silentio monitors the fill level in the Carat S underground tank and supplies the consumers with rainwater. If there is no more rainwater, drinking water is automatically fed to the consumers. The domestic waterworks are built in to a soundproof housing for whisper-quiet operation.

rain harvesting - professional package

Graf optimax filter

Optimal output (>95%) is achieved thanks to a patented filter principle.

  • Provides over 95 % water yield
  • Low maintenance as it is self cleaning
  • TÜV-tested to German standards
  • Continuously variable installation depth of 570 mm - 1,050 mm (22.4 - 41.3") using the telescopic dome shaft
  • For pedestrian loading with plastic cover or for vehicle loading with cast iron cover
  • Lockable childproof cover
  • Minimal height offset (200 mm / 7.9") between the inlet and outlet
  • Maximum roof surface area of 350 sqm with connections DN 100 and 750 sqm with DN 150. Optional with cleaning unit Opticlean

Technical Details:

Inlet Outlet Wastewater
330 - 800mm 530 - 1000mm 530 - 1000mm
rain harvesting - professional package

Graf optimax industrial filter

For roof surfaces up to 1,500 m2! External filter to clean the rainwater in large industrial premises.

  • For roof surfaces up to 1,500 m2!
  • Over 95 % water yield
  • low maintenance, as self-cleaning
  • TÜV safety-tested
  • Variable installation depth from 800 - 1,200 mm using telescopic dome shaft
  • Cover has child-proof closure
  • Sealed up to the earth surface
  • Low height offset (200 mm) between inlet and outlet
  • Maximum 750 m2 roof surface with DN 150 connections and 1,500 m2 with DN 200

Technical Details:

Inlet Outlet Wastewater
DN 150/200 DN 150 DN 150/200
330 - 800mm 430 - 1017mm 654 - 1241mm
     

All measurements are from connection centre until the upper edge of the ground.

Filter insert

  • Optimal effectiveness (> 95 %) achieved through three-layer filter principle
  • Extremely smooth surface, equals max. self-cleaning, mesh width 0.35 mm
  • Can be fitted with Opticlean cleaning unit

Application

  • External filter to clean the rainwater in large plants
  • Industrial filter technology up to 1,500 m2
  • Available as suitable for pedestrian loading and suitable for vehicle loading variations
  • Optimal cleaning performance with maximum water yield
rain harvesting - professional package

Graf Soakaway Tunnel

The GRAF percolation tunnel "Sicker-Tunnel" is a system which has been particularly designed for the percolation of rainwater and retention respectively. The structure of the "Sicker-Tunnel" allows a space-saving installation close to the surface, even under footprints used by cars.

Technical Details:

Volume: 300 litres
Length: 1,200 mm (incl. end plates)
Width: 800 mm
Height: 510 mm
Connectors: upper side: DN 100, DN 150, DN 200 and DN 300
lower side: DN 100
Weight: approx. 11 kg
Material Sicker-Bloc 300 car-bearing: 100 % polypropylene (made of recycling material)
Knollands Soak Away Tunnels

Graf rain block

For stromwater management the flexible, high-performance percolation rain bloc is ideal for use in public and industrial areas.

  • Specially developed percolation shaft for stormwater management or rainwater harvesting, for controlled draining of rainwater into the groundwater
  • The unique inspect rim facilitate flexible laying of inspection channels within your percolation bloc ditches
  • Unit already completely prefitted and only has to be installed in the tried and tested percolation block system
  • Lorry-bearing with 50 - 275 cm of earth covering - vehicle loading with 25 - 275 cm of earth covering
  • Facilitates SLW 60-bearability with an 50 cm (19.7 inches) earth covering
  • Maximum installation depth 500 cm to the lower edge of the Rain Bloc
Knollands Septic Tanks

Septic Tanks

Our range of septic tanks are suitable for both domestic and commercial applications and for populations of 1 up to 500 people. The Knollands Bio-Pure septic tank is an innovative and cost effective solution and as a result is our best selling septic tank.

Drainage systems

Wether it be agricultural drainage coil, twin walled CorriPipe™ or Hunter sewer drains, Knollands can offer quality drainage systems for a number of different requirements and are perfect for use with our range of septic tanks and rain harvesting products.

rain harvesting

Knollands supply mainly Graf Carat S underground tanks due to their quality construction and reliable design. Convenient packages that include everything you need to start rain harvesting result in a simple and enjoyable project that benefits you and the environment.

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