The mains water top up supplies the rainwater storage tank with water as required during prolonged dry periods (daily requirement of a single-family house), in accordance with DIN EN 1717.

The ½ mains water top up with free outlet, ready-to-install and electrically controlled consists of:

  • Float switch for top up with fastening clamp with 3-, 10- or 20 m connection cable
  • Solenoid valve with connecting cable and safety plug
  • Intermediate plug for electrical connection of float switch and solenoid valve
  • Stainless steel braided connecting hose ½".
  • Ball valve with stainless steel strainer (mesh size 0.25 mm)
  • Stainless steel tundish with nozzle for splash-free flow

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Article number

Mains water top-up set with 3m connection cable TW 8803
with 10m connection cable TW 8810
with 20m connection cable TW 8820