Compact Filter

Compact Filter Open


3P Technik’s smallest rainwater filter for installation within rainwater tanks.

The 3P Compact Filter is ideal where there is little room and no height difference available between inlet and outlet.

Optional 3P Back-washing Device. The 3P Compact Filter is ideally suited for use in conjunction with a 3P Overflow Siphon and the 3P Calmed Inlet.

Low maintenance, self cleaning, depending on the level of solids in the incoming rainwater.

Connection capacity for roof areas up to 150 m²

All connections DN 100 (110mm OD).

No height difference between inlet and outlet.

Mesh size of filter cartridge 0.7 x 1.7 mm.

The cleaned water can be used in washing machines, toilet flushing and garden watering, in homes, in commerce, in public buildings and in industry.

How it Works

Compact Filter Operation

  1. Rainwater flows onto the filter cartridge.
  2. The filter cartridge cleans the rainwater. The cleaned rainwater flows through the calmed flow inlet into the rainwater tank.
  3. Because of the smooth surface structure of the filter, the dirt is quickly rinsed away into the sewer.


Due to the horizontal position of the filter cartridge, the filter gets dirty more rapidly than a filter cartridge with steep inclination. We, therefore, recommend using the 3P Back-washing Device and regular cleaning with detergent and brush in order to degrease the filter sieve. If you wish to use the cleaned water inside the home the back washing device is essential.

Technical Data

Product Code: 1000100 (Blue), 1000120 (Black)

Filter according to DIN 1989-2, Type C

Connection inlet: DN 100 (110mm OD)
Outlet into tank: DN 100 (110mm OD)
Outlet into sewer: DN 100 (110mm OD)

i.e all connections fit 110 mm drain

Height difference between rainwater inlet and outlet 0 mm (zero).

Housing material: Polyethylene

Filter cartridge: Stainless steel 1.4301
Material Poly-Net: Polyethylene

Mesh size: 0.7 x 1.7 mm

Weight: 1.4 kg


3P Back-washing Device Art.-No. 1000355
PF + SF consisting of: Back-washing Device and Connection Set. Retro-installation possible.

3P Automatic Back-washing Device Art.-No. 1000356
consisting of: Back-washing Device, Connection Set and Programmable Timing Device.

3P Removal Handle Art.-No. 1000550
For filter removal in deeper installations.
Length: 50 cm
Material: Stainless steel


Compact Filter Dimensions


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.