Atlantic Blowers' AB-850 Three Phase/Single Stage Regenerative Blower can be used for various pressure or vacuum applications. The AB-850 produces a maximum flow of 464 CFM. The maximum pressure and vacuum is 134 inH2O and 129 inH2O respectively.The AB-850 has a power output of 10 HP (7.5 kW) with speeds of either 3000 or 3600 RPM (50/60 Hz dual frequency). The voltage is 220-275Î”/380-480Y with an FLA rating of 26.0Î”/13.0Y. Measuring at a distance of 3 ft. the blower will produce a noise level of 80 dbA. The inlet/outlet connection size is 2.50" female NPT.