Designed to automatically transfer fuel from a bulk storage tank in a basement or an aboveground tank to the generator day tank. The system will keep the day tank filled by transfering fuel when the day tank low float is triggered and stopping the transfer of fuel when the day tank high float is triggered.

Designed to automatically transfer fuel from a bulk storage tank in a basement or an aboveground tank to the generator day tank. The system will keep the day tank filled by transfering fuel when the day tank low float is triggered and stopping the transfer of fuel when the day tank high float is triggered.

Designed to transfer fuel from a double walled underground main tank to a day tank. Double walled bulk storage tanks are used in underground applications to prevent fuel from entering the ground. Submersible pumps are more commonly provided with underground tanks.

Designed to transfer fuel from a double walled underground main tank to an aboveground pumpset by way of a transition pump. Most commonly provided when transferring from an underground tank to a generator bellytank with a significant distance between the two.