Hailea ACO-9730 Deep Water Air Pump
Voltage: 220-240V 50Hz
Pressure: 0.035MPa min.
Air Flow: 60L/min
Noise: 40dB max.
Double Damper and noise absorbing system, ultra-silent.
Double flow bars, high air flow and air pressure.
Environmental friendly design, pure compressed air.
Complete waterproof. No leakeage
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What more can I say? Bought this for aerating my septic tank. Uses as much electricity as a light bulb and you can barely hear it. I am quite pleased.