Are seperate Pesach Urns necessary?

Dear Rabbi,

Do we need to change our shabbat urn for pesach?

Dear Friend,

You should kasher it through hag’alah: Clean it (including the spigot) and fill it to the top with boiling water, till it overflows. A good method is to pour a little boiling water from an electric kettle into the urn so that it overflows.