The Reznor 208920 is a natural gas valve designed to precisely control the flow of gas in various heating systems. Made of aluminum for durability, it features a 3.5-inch water column pressure rating, making it suitable for standard gas lines. This valve operates on a 24-volt electrical signal and opens and closes to regulate gas flow based on the system's heating demands. This precise control ensures efficient operation and helps maintain consistent comfort levels. NPT 1threads ensure secure connections to gas lines found in unit heaters, the Reznor 208920 plays a vital role in regulating gas flow and optimizing heating system performance. Its lightweight design (around 1.95 pounds) simplifies installation and maintenance. With a frequency of 60Hz, it's compatible with most North American electrical grids. Overall, the Reznor 208920 offers precise gas flow control, efficient operation, and reliable performance for natural gas-fueled heating systems.