In the ENA coffee machines, the 180mm Silicone Tube leads from the Water Inlet Valve (The water tank inserts into the water inlet valve) to the
Flowmeter.
In the S8 TFT model, the 180mm Silicone Tube connects the Flowmeter to the Angled Silicone Tube.
In the GIGA models, it connects to the I-Form Connector.