The Robertshaw 710-511 is a low-capacity gas valve intended for natural gas use in various HVAC equipment. It has a straightforward 3-position dial Off, Pilot, On for controlling the gas flow manually. Internal temperature-sensing technology controls the flow of gas according to high and low preset limitations, ensuring even heating or cooling within your preferred range. #Robertsh... https://www.partshnc.com/710-511-robertshaw-12-hi-lo-natgas