Threaded extension D400 H250, with gasket, for EPURECO or EPURBLOC drainage tank and ACTIBIO or EASYBIO biological treatment plant tank, black color W-004G

Septic tank extension – tightness and access

Threaded extension D400 H250 is a key element ensuring a tight seal of Epureco or Epurbloc drainage tank reservoirs, as well as Actibio or Easybio biological tanks. Its construction guarantees easy access to the inside of the tank for inspection and maintenance. Made of durable material, resistant to weather conditions and loads, it is an integral part of the wastewater treatment system.

Application and compatibility

Designed for mounting on tanks with a diameter of 400 mm and a height of 250 mm, the extension is compatible with popular GRAF septic tank models – Epureco, Epurbloc, Actibio and Easybio. Thanks to the precise thread, it ensures a tight connection, minimizing the risk of leaks and unpleasant odors. The gasket included in the set further strengthens this effect.

Installation and benefits for the installer

The extension is easy and intuitive to install, which translates into time savings during septic tank installation. The threaded connection eliminates the need to use additional sealants or adhesives. The solid construction ensures stability and durability of the connection, and the black color of the extension blends aesthetically into the surroundings. For the installer, this means fewer problems with complaints related to leaks or mechanical damage.

• Quick installation: Threaded connection speeds up installation.
• Tightness: Gasket and precise thread guarantee no leaks.
• Durability: Resistant to weather conditions and mechanical loads.
• Easy access: Allows inspection and maintenance of the tank.
• Aesthetics: Black color blends into the surroundings.