Low maintenance， due to the self cleaning design

Food grade high quality polyethylene construction

Retro-installation of 3p backwashing device pf plus sf is possible; the 3p sinus filter is ideally suited for use in conjunction with a 3p overflow siphon duo and the 3p calmed inlet

No height difference between rainwater inlet and outlet

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