Retention Filter with Telescopic Extension

  • Retention Filter with Telescopic Extension_1000626
    Retention Filter with Telescopic Extension.


The 3P Retention Filter with plastic shaft extension tube is for direct installation in the ground before the rainwater tank, with locking lid.

The extension tube is telescopic, so it can be cut to the correct height. It is simple to use and install. The extension is correctly fitted when the bayonet locking system which clicks into place.

This specialised filter retains all debris in a stainless steel basket (mesh size 0.55 mm). No dirt is washed away into the soakaway or infiltration structure.

This filter is suitable for systems where the water is used in washing machines, toilet flushing and garden watering, in homes, in commerce, in public buildings, in industry, and for sites in which the rainwater has to be infiltrated. This filter is ideal where no connection to waste is possible.

All inlets and outlets are at DN 100 (110mm OD), one inlet can also be used as an emergency overflow.

The cleaned rainwater is led through the bottom connection into the rainwater tank. A calmed inlet can be installed there.

Connection capacity for roof areas up to 213 m².

The cleaned water can be used for washing machines, toilet flushing and garden watering.

The filter has to be cleaned depending on the contamination several times during the year.

How it Works

1. Rainwater flows onto the filter cartridge.

2. The dirt is retained in the dirt collecting basket. The basket has to be cleaned if necessary.

3. One inlet DN 100 (110mm OD) can also be used as an emergency overflow.

4. Cleaned water flows over the inlet DN 100 (110mm OD) into the rainwater tank.

Technical Data

Product Code: 1000626

Filter according to DIN 1989-2, Type B

2 x Connection inlet: DN 100 (110mm OD)
Outlet into rainwater tank: DN 100 (110mm OD)

Connection capacity for roof areas up to 213 m².

Housing material: Polyethylene
Telescopic extension: Polyethylene

Material filter basket: Stainless Steeel 1:4301
Mesh size: 0.55mm


4000100: Calmed Inlet
4000265: Overflow Siphon Uno for plastic tanks


Garden Filter dimensions 2 gf_with_telescopic_extension_dimensions_large

if you need more information, help selecting the best product for your needs or simply want to buy our products, please Contact our team of experienced rainwater harvesting experts.