Gast – AT05-101-G215DX – Rotary Vane Septic Air Pump


Gast AT05 Rotary Vane Septic Air Pump:
The Gast AT05 Septic Aerator is the industry work horse. It produces little noise, about as loud as a conversation at home or the office. That’s very different from older model rotary vane pumps.

The AT05 lasts far longer because, unlike linear pumps, it doesn’t use rubber diaphragms that wear out within 3 years. This rotary vane pump uses nickel plated rotors and a unique coating inside the pump that reduces wear. Gast added a built-in fan to cool the pump during hot, southern summers. Overall, this septic aerator should last up to 10 years.

The AT05 is designed to run at 5PSI, but it will overcome system pressure up to 10 PSI for a while. That is 4 times more back pressure than linear pumps can do. If diffusers in the tank are clogged, the AT05 can overcome the back pressure until your maintenance provider replaces the diffusers. That means the oxygen continues to flow to aerobic bacteria in the tank and your system won’t go septic.

Repair kits are easy to install. The AT05 is designed for ease of maintenance. Whether you want to change the air filters or perform a complete re-build, a few hand tools are all you need. You can do a complete re-build with a Gast OEM kit in less than 1 hour.

Gast AT05-101-G215DX Rotary Vane Septic Aerator:

  • Trouble free for up to 10 years,
  • Built-in cooling fan protects pump from summer heat,
  • Advanced, low wear vane technology,
  • Low noise compared to other pumps, and
  • Energy efficient motor design.

To rebuild/repair pump use kit K882.​

AT05-520-G215DX is the same as AT05-101-G215DX. It is pre-wired for your convenience to make installation easier. It is a Gast OEM product.

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Please note: This product’s voltage is 115VAC only. Cables not included.

29 in stock

SKU: AT05-101-G215DX Category: Brand:
Product Specification
Noise 59 dB Between a library and a quiet conversation at home.
Power 1/4 hp 0.19 kW
Minimum Temperature 33.8 Fahrenheit 1 Celsius
Maximum Temperature 104 Fahrenheit 40 Celsius
Minimum Pressure 0 60 Hz
Maximum Pressure 10 PSI 60 Hz
Additional Information
Weight 34 lbs
Dimensions 18 × 11 × 12 in







This item has a 2-year manufacturer's warranty.


Reviews (4)

4 reviews for Gast – AT05-101-G215DX – Rotary Vane Septic Air Pump

  1. 5 out of 5

    Randall McIntyre (verified owner)

  2. 4 out of 5

    Charles W. (verified owner)

  3. 5 out of 5

    Aaron McAnally (verified owner)

    Working good. My last one lasted about 20 yrs. Hoping for same results. Easy installation

  4. 5 out of 5

    Ron (verified owner)

    Great price!

Only logged in customers who have purchased this product may leave a review.

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Original price was: $565.00.Current price is: $550.00. Add to Cart

K882 Service Kit/Repair Kit!...

Service kits protect your investment and helps to decrease operational down time.  This manufacturer's repair kit is guaranteed compatible with the AT05 Rotary Vane Pump.

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