HVAC enviro-clean valve - SO model

Abstract

Currently, there are no products available which allow a user to solely remove microbial and bacterial growth inside a blocked HVAC condensate drain line using compressed air without cutting into or disassembling the drain line. Our valve is an in-line condensate drain line valve that can be installed easily, quickly and economically, either during new construction or onto existing HVAC systems. The HVAC user can remove microbial and bacterial growths without cutting into or disassembling the drain line by injecting compressed air through the valve. The design of our valve allows the user to perform safe and routine maintenance to the HVAC drainage system without having to resort to expensive and repetitive service call repairs over the lifetime of the HVAC system. The valve is further designed to prevent undesirable reverse airflows into the HVAC system and home or building, caused by a dry trap in the condensate drain. The prevention of reverse airflows and reduction of microbial and bacterial growth will have a positive impact of Indoor Air Quality.

1 . A plastic flow control device attached to a HVAC unit condensate drain line for removal of blockages within the drain line by the introduction of compressed air into the drain line through the valve and is comprised of 
 an 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 flushing port or orifice 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 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 fluids flow from the HVAC unit.    
   
   
       2 . The flow control device of  claim 1 , wherein the check valve remains open during normal operation and moves to a closed position without manual intervention upon the introduction of compressed air into the flushing port for the purpose of removing any -blockages within the condensate line.  
   
   
       3 . The flow control device of  claim 1 , wherein the check valve remains open during periods of normal operation and allows the check valve to move to a closed position without manual intervention in the event of a dry condensate line, thus reducing or preventing air inflows across residual microbial growth within the condensate line and into dwelling or office airspace.