Process chamber gas flow apparatus, systems, and methods

An electronic device processing system, comprising:

• a process chamber adapted to contain a substrate;
• a process gas inlet to the process chamber;
• and
• a process gas exit from the process chamber including a valve seat and a tiltable valve, the tiltable valve being configured and adapted to tilt relative to the valve seat to adjust a gas flow pattern within the process chamber.

A method of controlling flow of a process gas within a process chamber, comprising:

• providing a process chamber;
• providing a process gas exit including a valve seat and a tiltable valve;
• and
• adjusting a flow pattern in the process chamber by tilting the tiltable valve relative to the valve seat.