The Royal Range 1618 Pressure Regulator 3/4 Natural Gas is created to regulate and maintain the steady flow of gas to cooking appliances by adjusting the incoming natural gas pressure to the desired level of operation. It operates by having an internal mechanism that detects the changes in pressure and adjusts the gas flow to the correct amount so that the appliance receives the corre... https://partsfe.com/pressure-regulator34-nat-for-royal-range-part-1618