Amazon.com: AUTOGEN Single-Stage Rotary Vane Vacuum Pump 4CFM 5 Pa 1/3HP for Air Conditioner Refrigerant HVAC Air Tool R410a 1/4" Flare Inlet Port : Automotive
7771470 Edwards E2M30 Single Phase Rotary Vane Vacuum Pump A37415903
Kozyvacu Single-Stage Rotary Vane Vacuum Pump for HVAC/Auto AC Refrigerant Recharging, EPoxy Resin or Wine Degassing, Laboratory, Medical or Milking (TA350): Amazon.com: Industrial & Scientific
Rotary Vane Vacuum Pumps: Types, Applications, Benefits, and Design