This Honeywell Natural Gas Millivolt Valve is a precision-engineered control device designed for use in gas-powered heating systems. It features a 1/2 inch inlet and a 3/4 inch outlet, making it suitable for a wide range of residential and commercial applications. The valve operates on a millivolt power supply, which means it can function independently of the main power grid, providing reliable operation even during power outages. It is designed to control the flow of natural gas into the heating system, ensuring optimal performance and efficiency. The Honeywell Natural Gas Millivolt Valve is built to high industry standards for durability and reliability, offering long-lasting performance with minimal maintenance required.