This Honeywell Natural Gas Millivolt Valve is designed to control the flow of natural gas in heating systems. The valve features a 3/4 inch inlet and outlet size, ensuring compatibility with a wide range of equipment. It operates using millivolt power, which means it can function without an external power source, making it ideal for use in situations where power availability is unpredictable or limited. The valve is constructed from high-quality materials for durability and reliability. Additionally, it has been designed to meet industry standards for safety and efficiency.