Fuel whistle tank overflow protection acoustic level indicator, fuel whistle, prevents overflow 16 mm connection

The Fuel Whistle prevents the tank from overflowing during refilling. The whistle is inserted into the vent line, producing a clearly audible whistle during refueling. At the end of the refueling process, the sound changes and then disappears completely. This signals that the tank is full! No overflow, no pollution, and no stains on the deck! The hose connection must be 16 mm.