Sanitary piping.

1. All sanitary piping, fittings and connections that are exposed to milk or products made from it, or from which liquids may drip, drain or be drawn into the milk or product, must be constructed of smooth, impervious, corrosion-resistant, nontoxic and easily cleaned materials. 2. All piping must be maintained in good repair. 3. Milk and products made from it must be transferred from one piece of equipment to another only through sanitary piping. 4. The materials used in the manufacture of sanitary piping must be approved by the Director.