Dirt particles which are lighter than water (e. g. pollen) ascent and are swimming on the water surface. This swimming layer is removed through the special firmed overflow siphon when the tank is overflowing.
Installation errors will be avoided because of the fix height displacement in the overflow siphon therefore securing the function.
Overflow siphon with a bilateral suction of the surface water inside the rainwater tank. No getting through by rodents. A connection fitting for the supporting tube is available.
Connection DN 100. Material: Polyethylene
Connection fitting DN 50 for using a HT-tube as supporting tube. Is supported by the wall of the rainwater tank. The overflow siphon is filled with water (trap). If the tank has a low water level, the support will help to keep the overflow siphon in the right position.