Question
Can a coffee urn or pump that was used for chometz be used for pesach
Answer
Shalom!
If you are sure that it was just used during the year for water and non-flavored coffee and no chametz, then it's enough to clean it with soap and water, and then it can be used for Pesach. But if you mean it was used with actual chametz, for example if you warmed challot on the urn, then it's a problem.
Chag Kasher v'Same'ach,
Rav Ari Shvat
