RELIABLE ROTARY RESTARTS? ROGER THAT. INTRODUCING A ROTARY COMPRESSOR FOR UNITARY APPLICATIONS. Introducing the new LG UniRotary Compressor, designed for reliable performance in split and packaged system unitary applications. * Patented restarting solenoid valve mechanically equalizes pressure between the compressor shell and the low side of the system * Patented discharge check valve increases system efficiency * Optimized overload protector and reinforced mechanical parts that serve applications requiring a 1.5 to 2.5 ton capacity Innovation for a Better Life LG Compressors