This VOV is designed for climates with ambient temp. 105*+
The Smart VOV (varible orifice valve): uses system pressure and refrigerant flow to move a metering piston relative to a fixed opening in the sleeve. The piston movement is resisted by an attached spring.
You can notice: Improved performance when converting from R-12to R-134a 5*-12* colder air (at hot idle) Reduced compressor load and extended compressor life Improved city fuel economy and emissions Improved performance in factory R-134a systems
