Gaggia Classic Pro: Steam Valve Leak Test

by Whole Latte Love 1 min read Updated: September 18, 2025

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First, you're going to want to confirm this is an actual leak and not a normal drip caused by the vacuum in the line. Here is a video in which Ted discusses the expected drip and how to verify if this is what you are experiencing or if the valve is actually leaking. The natural inclination when you see water dripping from the wand is to try tightening the knob, but this may actually damage the seal the valve makes as some dripping is normal to see and overtightening should be avoided.