Espresso Parts Espresso Machine Cleaner by Puro Caff top-brands/chemex but they remain compatible only

but they remain compatible only with Lucifer-pattern valve bodies like this one

controlling the brief pre-infusion exhaust cycle that's central to E61 group performance

If your readings look off

SKU: HARIO_VSS1

Measurements in ml

Espresso Parts Espresso Machine Cleaner by Puro Caff top-brands/chemex but they remain compatible onlyThe Espresso Parts, Espresso Machine Cleaner is a specially designed backflush cleaner for espresso machines. Also known as Puro, we thought it was so good, that we put our name on it as well. Here is how it works. The Puro espresso machine cleaner removes the residual build up of coffee solids and oils from screens, valves, and tubes of brewing groups. This is important to quality coffee because a dirty machine will create dirty tasting coffee.