172-65459MA-04 (JH7.2R-P) 14 Jul 2015
5
Operation
Principles of condensate discharge:
As much air as possible should be eliminated at start-up using a bypass valve or
blowdown line.
1. Condensate Discharge
As steam is supplied, condensate flow begins.
The rising condensate level causes the float to
rise due to buoyancy, opening the orifice (A)
and allowing condensate to be discharged.
2. Discharge of Large Quantities of
Condensate
Increases in the condensate inflow rate cause
the condensate level in the trap to rise. The
float consequently rises and enlarges the
opening of the orifice (A), allowing more
condensate to be discharged. In this manner,
continuous condensate discharge occurs while
the opening size of the orifice varies
depending on the condensate flow rate.
3. Closed Position
When the condensate flow rate decreases,
the float falls, closing off the orifice (A)
opening. A water seal is maintained at all
times over the orifice (A) to prevent steam
loss.
Air
Steam
Condensate
