REF Pump perfect for litre products.

Insert the Nozzle: Place the nozzle securely into the tank.

Engage the Pump: If it’s an electric REF pump, flip the power switch. You should hear the motor prime.

Control the Flow: Squeeze the trigger. Most REF pumps have a "locking clip" on the handle so you don't have to hold it manually for large fills.

Monitor the Display: Watch the digital readout. The numbers will climb as the internal turbine or nutating disk measures the fluid volume.