THE TRAP HAS BEEN DESIGNED TO SOLVE ONE OF THE MOST COMMON PROBLEMS ENCOUNTERED IN AIR CONDITIONING SYSTEMS PRODUCED USING READY-TO-PLUMB ENCLOSURES: ODOURS COMING FROM THE CONDENSATE PIPE. BY INSTALLING THE TRAP ON THE DRAIN LINE WHILE THE SYSTEM IS BEING PUT IN RESULTS IN A PERMANENT BARRIER THAT STOPS ODOURS TRAVELLING BACK INSIDE.