1. 4-Wheeled Design: The refuelers are built on four wheels, likely for mobility and ease of transport across industrial facilities.

2. Automated Delivery: The refuelers are fully automatic, meaning they can carry out the dispensing process without manual intervention, improving efficiency and accuracy.

3. Repeatability: The equipment ensures that the same amount of fluid is dispensed each time, thanks to the precise control mechanisms in place. This consistency is essential for industries where accuracy in fluid measurements is critical.

4. Variable Preset Quantities: Operators can set the desired amount of solvent or fluid to be delivered, offering flexibility to accommodate different requirements.

5. Electronic Register & Control: The refuelers feature an electronic register, which tracks the amount of fluid dispensed, and it also controls the outlet valve, ensuring that the preset quantities are dispensed as required.

This type of system is commonly used in industries where precise measurement and controlled delivery of fluids like solvents, chemicals, and industrial liquids are important. The automation and repeatability make it ideal for applications that demand both efficiency and consistency.