Sous Vide

What process is required to kasher a sous vide for Pesach, if any? Does the answer change if it was never used with chametz, and only used for meat, fish, eggs and vegetables?

Crock pot : fry daddy

Hi, I was wondering is it possible to kosher a crock pot and fry daddy for Passover ?  if so can you let me know how ?

Pans

Hi, Can treyf pans a grater and cutlery (including knives) be Kashered for Pesach? If so, how? Thanks!

Koshering

can a nonstick pot or pan be Koshered for Pesach? Does it make a Difference if the pot/pan hasn’t been used in 2 years?