A method for preventing the mixing of dissimilar liquid products, comprising: coupling a tank delivery connector to a distribution side of a valve coupled to a tank compartment of a product delivery vehicle; locking the tank delivery connector to the distribution tank with a lock mechanism coupled to the tank delivery connector, wherein the lock mechanism includes a locking lever with a locked position and an unlocked position, the lock mechanism mechanically securing the tank delivery connector to the distribution tank; sensing when the lock mechanism secures the tank delivery connector to the distribution tank with a lock sensor mechanically coupled to the lock mechanism and electrically coupled to a tank tag reader; transmitting a delivery connector locked signal to the system controller when the locking lever is in the locked position and the tank delivery connector is secured to the distribution tank; when the lock mechanism secures the tank delivery connector to the distribution tank as indicated by the lock sensor, interrogating a tank tag coupled to the distribution tank with the tank tag reader of the tank delivery connector in order to retrieve a stored liquid type encoded on the tank tag, wherein the stored liquid type is indicative of a type of liquid product stored in the distribution tank; when the lock mechanism secures the tank delivery connector to the distribution tank as indicated by the lock sensor, transmitting to a system controller a stored liquid type signal indicative of the stored liquid type of the distribution tank; receiving at the system controller the stored liquid type signal; determining the stored liquid type based on the stored liquid type signal; receiving at the system controller a transported fluid property signal from a fluid property sensor positioned to contact liquid product stored in the tank compartment, the transported fluid property signal being indicative of at least one of a viscosity, density, dielectric constant, and temperature of the liquid product in the tank compartment; determining a transported liquid type of the liquid product in the tank compartment based on the transported fluid property signal; comparing the transported liquid type to the stored liquid type; maintaining the valve in a normally locked state when the stored liquid type and the transported liquid type do not match to prevent the flow of liquid product from the tank compartment; and transitioning the valve from the normally locked state to an unlocked state when the stored liquid type and the transported liquid type match, thereby permitting the flow of liquid product from the tank compartment. coupling a tank delivery connector to a distribution side of a valve coupled to a tank compartment of a product delivery vehicle; locking the tank delivery connector to the distribution tank with a lock mechanism coupled to the tank delivery connector, wherein the lock mechanism includes a locking lever with a locked position and an unlocked position, the lock mechanism mechanically securing the tank delivery connector to the distribution tank; sensing when the lock mechanism secures the tank delivery connector to the distribution tank with a lock sensor mechanically coupled to the lock mechanism and electrically coupled to a tank tag reader; transmitting a delivery connector locked signal to the system controller when the locking lever is in the locked position and the tank delivery connector is secured to the distribution tank; when the lock mechanism secures the tank delivery connector to the distribution tank as indicated by the lock sensor, interrogating a tank tag coupled to the distribution tank with the tank tag reader of the tank delivery connector in order to retrieve a stored liquid type encoded on the tank tag, wherein the stored liquid type is indicative of a type of liquid product stored in the distribution tank; when the lock mechanism secures the tank delivery connector to the distribution tank as indicated by the lock sensor, transmitting to a system controller a stored liquid type signal indicative of the stored liquid type of the distribution tank; receiving at the system controller the stored liquid type signal; determining the stored liquid type based on the stored liquid type signal; receiving at the system controller a transported fluid property signal from a fluid property sensor positioned to contact liquid product stored in the tank compartment, the transported fluid property signal being indicative of at least one of a viscosity, density, dielectric constant, and temperature of the liquid product in the tank compartment; determining a transported liquid type of the liquid product in the tank compartment based on the transported fluid property signal; comparing the transported liquid type to the stored liquid type; maintaining the valve in a normally locked state when the stored liquid type and the transported liquid type do not match to prevent the flow of liquid product from the tank compartment; and transitioning the valve from the normally locked state to an unlocked state when the stored liquid type and the transported liquid type match, thereby permitting the flow of liquid product from the tank compartment.