La Marzocco Upper Sight Glass to Boiler Tube Brand_Gottak great for watching your extraction

great for watching your extraction and diagnosing channeling

A wobbly lever is usually a sign the base plate mounting has worn loose

Full-service bars and cocktail bars rinsing glassware between pours where a countertop unit would interrupt the bar aesthetic or take up needed surface space

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La Marzocco Upper Sight Glass to Boiler Tube Brand_Gottak great for watching your extractionLa Marzocco Upper Sight Glass to Boiler Tube 235mm pipe connecting the upper sight glass to the boiler on La Marzocco machines; also used on the rare Linea 1 Group as the pipe from the check valve to the steam valve. La Marzocco part #TL01. SPECIFICATIONS 235mm length; 3 8" female BSP x 3 8" female BSP; La Marzocco part #TL01 COMPATIBILITY Fits: La Marzocco machines (upper sight glass to boiler); also the rare Linea 1 Group (check valve to steam