Gast RV03-315-G649DX Alternative Rotary Vane Septic Air Pump

  3 Reviews

Gast RV03-315-G649DX Alternative Rotary Vane Septic Air Pump


If you’re looking for a professional Rotary Vane Septic Air Pump replacement, without having to pay a hefty price, then look no further. Gast Rotary Vanes are known as the workhorses of air pumps. They work hard, last long, and ultimately get the job done.

The Gast RV03-315-G649DX is the replacement pump of choice for installers that desire longevity. Under the right conditions, this durable compressor will last you eight to 10 years without any issues. That’s over 7 billion rotations! This unique vane lays a film down on the counter face, so the material is wearing against itself. This allows the vane to wear at a rate of one-thousandth of an inch per year. A simple dusting of the top filter every four months will keep this septic air pump in tip top shape.

This air pump replacement is not sensitive to back pressure, which makes its the perfect pump for high back pressure situations, including pond applications. The Gast RV03-315-G649DX is energy efficient, so it won’t run up your power bill. Although it is supposed to last nearly a decade, if you do run into problems there is usually very little maintenance required. Repair parts are readily available on our site.


  • Max Flow - (60 Hz)4.8 cfm (8.2 m3/h)
  • Max Pressure - 5 psi (0.4 bar)
  • Max Vacuum - 24 in-Hg (150 mbar)
  • Power Rating - 1/4 hp (0.19 kW)




5 /5

Calculated from 3 client reviews.

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Ask a Question
  • What is the difference between the Gast AT05-101-G215DX and the AT05-520-G215DX? Also, Do you sell enclosures to protect a rotary vane pump from the weather?

    The only difrenceis a the motor might have been tweaked in one way or another there is no change to the design, output, or H.P. 

  • does this come in a 1/2HP?

    No the 1/4hp motor is specfice to the Gast AT05 it never came in 1/2HP. There are other models Gast makes but in the 23 series there is no 1/2HP models.