Knollands Septic Tanks & Drainage

drainage systems

Hunter sewer drainage

Hunter offers a comprehensive range of high quality drainage systems to overcome the most complicated drainage layout. Like all their products they are economical, strong and resistant to impact and are easy to install. There is a range of drainage accessories designed to meet the needs of the most stringent building regulations.
Their overall flexibility ensures we can supply all domestic and commercial requirements for foul water and surface drainage, up to and including main sewers.

Hunter sewer drains provide a comprehensive, integrated solution to the needs around the house like foul drainage, septic tank venting systems and storm water runoff. Sizes range from 100mm and 160mm but specialist sizes up to 400mm are produced and easily shipped out. The Hunter range of products has a full range of fittings to suit, this includes bottle gullies, manholes, bends, junctions, traps, adaptors, channels, guttering and down pipes.

Hunter sewer drainage Hunter sewer drainage Hunter sewer drainage Hunter sewer drainage

Culvert piping & twin wall drainage

CorriPipe - CorriPipe™ is a Twin Wall high density polyethylene pipe manufactured from 100% recycled plastic. The pipe is manufactured in a twin extrusion process, which forms two pipes, and heat welds them together as they are formed. The outside wall is corrugated whilst the inside wall is smooth.

Applications - CorriPipe™ is suitable for use in Civil Engineering, Agriculture and other subsoil applications. This pipe is available perforated, un-perforated and half perforated, which broadens the range of applications for which it is used.

Nominal I/D
94mm | 150mm | 225mm | 300mm | 375mm | 450mm | 600mm

Nominal O/D
110mm | 180mm | 268mm | 355mm | 426mm | 510mm | 675mm

Features and benefits:

  • Lightweight (6 metre Lengths)
  • Strong (Twin walled and corrugated)
  • Smooth inner wall for increased flow capacity
  • Resistant to naturally occurring chemicals
  • Can be installed at depths from 0.5 to 10 metres
  • Full range of fittings available
  • BBA, HAPAS Roads & Bridges Agreement Cert No 02/H069
  • Reduced Plant and labour costs
  • Faster Installation as 6 Meter lengths mean fewer joints
  • Elimination of waste compared to traditional pipe
  • Pipe can easily be cut on site
Twin wall drainage pipe

Fittings & accessories

Bends

CorriPipe™ bends
Range of bends including 30°, 45° and 90° from 150mm to 300mm available from stock.

Fittings
150TB15 | 150TB30 | 150TB45 | 150TB90
225TB30 | 225TB45 | 225TB90 | 300TB30
300TB45 | 300TB90

Equal Tees

CorriPipe™ equal tees
Range of sizes of equal tees from 150mm to 300mm available from stock.

Fittings
225/150TY45 | 300/225TY45 | 300/150TY45
375/150TY45

Unequal Tees

CorriPipe™ unequal tees
Range of sizes of unequal tees from 150mm to 300mm available from stock.

Fittings
225/150TT90 | 300/150TT90 | 300/225TT90
375/150TT90

CorriPipe™ adaptors

 

Adaptors

To connect twin wall to single wall sewer are available from 150mm to 300mm for 6", 9" & 12"pipes.

Fittings:
TC150/SWS6" | TC225/SWS9" | TC225/SWS9"

CorriPipe™ unequal wyes

 

Unequal Wyes

Range of sizes from 150mm to 300mm available from stock.

Fittings:
TC150/SWS6" | TC225/SWS9" | TC225/SWS9"

CorriPipe™ sewer tees

 

Sewer Tees

To T-off Twin Wall Pipe to 4inch/6inch single wall sewer. Range of fittings include.

Fittings:
150/SWS6"TT90 | 225/SWS6"TT90
300/SWS6"TT90 | 375/SWS6"TT90

Gullies: YG01

Gully YG01

940mm long x 698mm wide x 450mm deep.
YG01 is designed to accept a 390 x 315mm clear opening heavy duty road grate as demonstrated above (not supplied)

RG01

Gully RG01

ø 375 x 760 deep.
The RG01 will accept a heavy duty road grate when block-work has been carried out.

RG03

Gully RG03

ø 450 x 750 deep.
The RG03 will accept a heavy duty road grate when block-work has been carried out.

RG04

Gully RG04

390mm long x 315mm wide x 390mm deep.
RG04 is a specially developed road gully designed to meet the requirement for a shallow gully and pavement repair work. RG04 will accept a 160mm sewer pipe.

RG05

Gully RG05

390mm long x 315mm wide x 390mm deep.
RG05 is a specially developed road gully designed to meet the requirement for a shallow gully and pavement repair work. RG05 will accept a 150mm twin-wall pipe.

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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