This Burnham Commercial Gas Valve is a critical component designed for the regulation of natural gas flow in various heating systems. The valve operates on a millivolt (MV) system, which is a low-voltage circuit typically used in heating applications. The product features a natural gas (NAT) configuration, indicating its compatibility with systems that utilize this specific type of fuel. The term "Gas Valve" (GAS VLV) refers to the function of the device, which controls the release and flow rate of natural gas into a system. This Burnham Commercial product is designed with industry-standard specifications, ensuring compatibility and seamless integration with a wide range of heating systems.