Lennox 73W17 3.5 Inch Water Column Natural 1/2 Inch Gas Valve 24V

The Lennox 73W17 is a 24-volt natural gas valve used in Lennox HVAC equipment like furnaces and boilers. It's a key safety component that regulates the flow of natural gas to the burner. The valve opens and closes based on signals from the thermostat. It has a maximum regulatory capacity of 150,000 BTU, making it suitable for most residential gas heating systems. Here's how it works: When the thermostat detects a need for heat, it sends a 24-volt signal to the gas valve. The valve then opens, allowing natural gas to flow to the burner assembly. The gas pressure within the valve is set at 3.5 inches water column (w.c.), which is the optimal pressure for safe and efficient combustion. If the gas pressure fluctuates outside the safe range, the valve will shut down to prevent improper combustion or potential hazards like gas leaks. Overall, the Lennox 73W17 is a crucial component that ensures safe and efficient gas flow in your Lennox HVAC system. It helps maintain comfortable indoor temperatures while keeping the system running smoothly.