The Southbend 1160205 Pressure-Regulator Natural Gas 3/4" 5" WC is used to stabilize the flow of natural gas entering a cooking appliance to keep the amount of pressure steady. It works by automatically modulating the flow of gas to produce a constant water column of 5 inches to make sure that the appliance does not work outside its operating pressure range. This pressure regulator is... https://partsfe.com/pressure-regulator34-nat-for-southbend-part-1160205