Whats the air pipe of the condensate pump for?

Condensate pump pump body air vent valve operation should be right in front of the pump and slowly open, treat water filling deflated after condensate pump start off small pump body bleed valve to 1-2 laps.

Because of the steam turbine condenser and condensate pump works under vacuum. Condensate pump with air tube is inside the pump or the condensate in the central belt must have air, immediately by air pipe to the condenser, not make the air concentration within the condensate pump, affect the normal operation of the condensate pump.

In pump work, if the medium contained too much air will generate cavitation, if into the flow of air that will reduce a lot.