Patent ID: 6584995
Filing Date: 2003-07-01
Classification: A61L,B08B,F24F,Y10T

Abstract:
A plastic flow control device attached to a HVAC unit and connected to a condensate drain line for sanitizing the condensate line and removal of blockages within the drain line by the introduction of compressed air into the line, and is comprised ofan inlet port of the flow control device having one end connected to a condensate outlet port of the HVAC unit; an outlet port of the flow control device having the other end connected to an upstream end of the condensate line; a cleaning port of the flow control device, adapted to allow the introduction of a cleaning fluid for sanitizing and removal of any blockages or microbial growth within the condensate line, a flushing port of the flow control device, adapted to allow an outside compressed air source to be introduced, for the purpose of flushing any blockages or microbial growth within the condensate line; and a single internal check valve disposed between the cleaning port and the flushing port within the flow control device for the purpose of directing compressed air flow therein and simultaneously preventing reverse compressed air and reverse fluid flow into the HVAC unit, whereby during normal operation the check valve is allowed to open freely when fluid flows from the HVAC unit and/or when the cleaning fluid is added through the cleaning port to the condensate line.