The dispenser 1 comprising an air pump connected to the water discharge device and the chamber and operable so as to flush the capsule with air after introduction of water into {HEAD ~ the capsule} so as to empty {TAIL ~ the capsule} of liquid and prevent back flow of liquid into the dispenser 
The dispenser 1 comprising an air pump connected to the water discharge device and the chamber and operable so as to flush the capsule with air after introduction of water into { HEAD ~ the capsule } so as to empty { TAIL ~ the capsule } of liquid and prevent back flow of liquid into the dispenser
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