I have a question related to flow of condensate and non-condensables in a 3 stage ejector system for vacuum.
We say that from each condensers (1st, 2nd and 3rd stage) there is a seal leg / barometric leg for transportation of condensed liquid to receiver vessel to overcome the pressure difference between condensers(low pressure region) and Receiver Vessel (Higher Pressure), however from 3rd ejector condenser the non-condensables are also routed to the same receiver vessel.
Having said that, how is it possible to transport non-condensable gases from 3rd Ejector Condenser (Low Pressure) to Receiver (High Pressure).

Thanks In Advance for Considering the above query.