Continuous churns
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
All product contact surfaces of the churn and related equipment shall be of noncorrosive material. All non-metallic product contact surfaces shall comply with 3-A Standards for Plastic, Rubber, and Rubber-Like Materials. All product contact surfaces of the churn and related equipment shall be readily accessible for cleaning and inspection. Construction shall follow the applicable principles of the 3-A Sanitary Standards.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.