The 412 water meter uses a measuring principle based on the proven XN wet-dial measuring mechanism. The large digit roller counters make it easy to read. And the patented labyrinth seal (two points) between the measuring chamber and the roller counter minimizes throughflow, reducing intrusive foreign matter. The dial face resists contamination thanks to an encapsulated roller counter, changeover gears and a patented star wheel that minimizes centrifugal suction and turbulence.
A special seating arrangement and the o-ring ensure the long-term integrity of the coaxial seal between the cartridge and the body. Patented design (Patent No. DE 19944087C1).
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