Steam wand sucks milk

[oton]

I notice that the steam wand sometimes sucks some milk. Could this milk get into the boiler?

[Endo]

I notice that the steam wand sometimes sucks some milk. Could this milk get into the boiler?

I seriously doubt it.

Only problem might be blocked tip holes (but even this is unlikely due to the large size). Still, I think it is "standard barista practice" to keep a wet towel next to the wand and give the wand a quick wipe right after steaming and then a quick blast after the wipe to clean out the holes. Look at any pro barista steaming milk on You-Tube.

If you follow this technique, you should never have a problem.

Some people let the wand soak in water to clean it. (A bad practice in my opinion). If you turn off the machine while it is soaking, the cool-down will create a vacuum in the steam boiler and the milky water might get sucked in before the vacuum breaker opens. But this is the only case where I have seen this happen.