KRS 234.240: Class A liquid to be purged from pumps, meters and hoses before use with

Class B liquid.

In the event that a tank vehicle is equipped with a pump, meter, and hose, or any

combination thereof, such equipment shall not be used for the delivery of Class B liquid

if its prior use has been for Class A liquid, unless it has first been flushed with a quantity

of Class B liquid sufficient to effectively clear it of all Class A liquid; or cleared of Class

A liquid by some equally effective method.