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Hakko Air Pump 120L

The Hakko new HK-120LH linear air pump represents a top of the line Linear Air Compressor with 36 month warranty. The new HK-120LH has a newly designed magnet (actuating armature) which helps the pump to run cooler than the original HK-120L.

This is a cast aluminum body style. It is a small unit with surprisingly high output. The Hakko air pumps are built to last with a very durable body and mechanics meaning years and years of everlasting quality airflow.

Very low noise 32/38 dB at 1 meter, low power consumption, Silent operation, Completely oil free, Overload protection with Auto off/on switch for overheat situations. Low power consumption. UL and CE listed for outdoor use.

  • The Hakko Air Pump 120 will deliver a maximum of 138 Liters Per Minute.
  • Outlet fitting is 1" O.D. 6 foot power cord supplied.
  • No oil needed for lubrication making the Hakko easy to maintain.

You can differentiate between the original HK-120L and the new HK-120LH by the color of the knob on top of the unit. The original HK-120L has a black knob and the new HK-120LH has a gray knob.

When ordering replacement magnets for the new HK-120LH be sure to order the HK-M120H/200/250 magnet. If you have the original HK120L (prior to 2015) air pump please order the HK-M120-magnet.

The replacement diaphragm kit HK-D100/120 fits both the HK-120L and the HK-120LH.

Model / Item HK-120 Application: Features & Benefits:
Rated Voltage (V) AC 115 (AC 110/115/120 or
AC 220/230/240)
  • Aeration
  • Liquid agitation
  • Mamut pump for air lift
  • Aerobic treatment
  • High Efficiency
  • Simple Maintenance
  • Completely Oil-Free
  • Overload Protection
  • Silent Operation
  • Long Life Expectancy
Power Supply Frequency (Hz) 56 / 60
Normal Pressure Bar (psi) 0.20 (2.84psi)
Rated Performance lpm (cfm) 121
Power (W) 126
Noise Level (dB) 42 Maximum dimensions: Certificate:
Closed Pressure / Bar 0.54
Closed Pressure / psi 7.8 260 x 199 x 244 mm
  • CUL
  • CE
  • JET
Weight (kg) 8.9 / 19.6