The AI Axis 40 Centrifugal Pump is the mid-size model in AquaIllumination's Axis return pump line, stepping up flow capacity from the Axis 20 while keeping the same quiet DC motor and smart coordination features. Flow rate: ~400 GPH (1500 lph) Max head: ~9ft (2.8m) Power: variable, 20W max, 100-240VAC input Dimensions: 2.44in diameter x 6.625in tall Nozzle sizes (barbed): 0.625in (16mm) small, 0.75in (20mm) large — interchangeable for different plumbing setups Coordinated modes: a single button on any connected AI pump can switch all your AI pumps into feed or maintenance mode together Anti-siphon calibration: instead of shutting off completely, the pump keeps spinning without producing flow — this prevents back-siphoning and avoids air bubbles when it resumes normal operation The interchangeable barbed nozzles are worth noting when planning plumbing — you can size the outlet up or down without swapping the whole pump as your system's needs change.Compatible replacement parts: barbed nozzle sets for the Axis 40.
