This Reznor orifice is a brass component with a diameter of 1.6 millimeters. It is designed to control the flow of gas or liquid through a system by providing a precise aperture through which the medium must pass. The use of brass material offers corrosion resistance and durability, ensuring consistent performance in various operating conditions. This orifice is typically used in heating equipment, such as furnaces or heaters, where accurate flow regulation is essential for optimal functionality and efficiency.