Gast 1023 Rotary Vane Septic Air Pump

The Gast 1023 Rotary Vane Pump is a rotary vane type compressor/vacuum pump ideal for low pressure applications. The 1023 rotary vane model from Gast features a 3/4 HP continuous duty motor. 26" Hg max. vacuum, 10.0 CFM open flow, 10 psi max. pressure, 10.0 CFM open flow.

The Gast 1023 rotary vane pump includes internal muffler and filter, silencer for quieter operation, thermal protector to protect the motor from overheating and burning out.

The rugged Gast 1023 Septic Aerator has a tough cast iron housing and sealed bearings providing a low maintenance and durable solution for just about any low pressure application.


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  • Does the 1023 unit come with the cooling fan? Also I understand they can be 230 or 120 volt. If I was to order one, can it be sent 120?

    They come as 120 and no the 1023has no cooling fan, and we have not seen it give an advantage in the smaller pumps as far as longevity.