Title: concerns of the plastic knob and steam valve construction
Product review: I have just received the set yesterday. To our disappointment, I have found that the entire knob and steam control valve was constructed by plastic. A large portion of the plastic will be exposed to the inside steam while cooking. Anybody has the same concern? After some search, it seems to me that all the steam control valves for waterless cookware are constructed in this way no matter what the brand is.
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