The Resideo VR8205M2823T is a 24V AC single-stage, 1/2-inch x 1/2-inch combination gas valve designed for gas-fired HVAC equipment using direct ignition. It regulates and controls gas flow to the burner, with an automatic solenoid valve opening on a thermostat call for heat and a second safety valve closing if gas supply or electrical power is interrupted. It is suitable for residenti... https://www.partshnc.com/vr8205m2823t-resideo-12-24v-dualdirectign-gasvlv