4000 litre Septic Tank

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4000 litre Septic Tank

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Product Information
Call Plastic Tanks Qld on 07 3271 1305 or e-mail us atsales@ptq.com.auto save water.

000841 – 4000L Septic Tank
000840 - 4000L Septic Tank with Baffles
000843 - 4000L Septic Tank AWTS Undrilled

Meeting the needs of four to five bedroom homes, Reln's 4000L Septic Tanks are ideal for large households.  The tanks are fitted with RELN's innovative reinforced structural brace ring and come complete with a strong, structural two piece baffle that clips and screws into place to create two separate chambers, in accordance with authority requirements.

The tanks are robust yet easy to handle and light, weighing in at just 159kg or 181kg with the baffle. 


  •     Australian Standards Approved - AS/NZS1546.1:2008 On-site domestic wastewater treatment units –Septic tanks Lic SMK1651
  •     Easy to Transport – Lightweight and easy to manage without a crane. Riser kits are packed and stored inside the tank for delivery
  •     Strength by Design – RELN tanks feature a unique stepped ribbing for added strength
  •     Anti Crush - Fitted with an innovative reinforced polypropylene structural brace ring that adds even greater rigidity to prevent crushing when installed deep in the ground
  •     Built in locking alignment prevents incorrect fitting of lid to base
  •     Complete Kit – RELN Septic Tanks are supplied as a complete kit including inlet and outlet T-Junctions
  •     15 Year Warranty.

  • RELN’S 4000L Septic Tank includes
  •     4000L Septic Tank base assembly
  •     Baffle and assembly screws– supplied if required by state health department regulations
  •     Standard Septic Tank Installation Kit
  •     Overall diameter: 1998mm
  •     Weight: 159kg
  •     Tank base to ground level depth: 2272mm
  •     Capacity: 4000L
  • Delivery - a Plastic Tank representative will call you to discuss pricing.

  • Specifications
  •     Overall tank height: 2410mm
  •     Liquid depth level: 1732mm
  • Delivery - a Plastic Tank representative will call you to discuss pricing.
  • Installation Instructions
Product CodeRELN4000SEPTIC

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