Whirlwind STA40 Linear Air Pump

Item #: WHISTA40
Whirlwind STA40 Linear Air Pump
Hose & clips included


2-Year Warranty on Whirlwind Linear Air Pumps

We offer a 2-Year Limited Warranty on all Whirlwind Linear Air Pumps.

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Filter for Whirlwind Air Pumps
Whirlwind STA40 Diaphragm Kit

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The Whirlwind STA40 linear air pump is commonly used for septic tank aeration. The STA40 is a superior choice for new installations or for upgrading any existing 40 Liter Per Minute (l/min.) linear air pumps on the market.

Whirlwind air pumps have low vibration and are designed to operate quietly. They are also easy to install and only require minimal maintenance. Whirlwind air pumps do not require lubrication or any tools to replace the filter. Simply loosen the top cover knob, lift off the cover, and remove the existing filter pad and replace with a new filter.

The Whirlwind STA40 has a maximum airflow of 1.7 CFM, a maximum pressure of 2.18 PSI and is used for septic tanks up to 500 Gallons Per Day (GPD) or 40 l/min.


  • Easy to install
  • Quiet operation
  • Light and compact
  • Inside threaded outlet port
  • 6-foot power cord


Voltage (60Hz)120V
Tank Size500 GPD, 40 l/min.
Unit Dimensions7" x 8" x 8"
Unit Weight12.5 lbs.
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