Sight glass valve castings are essential in showing a visual on fluid flow throughout pipelines and tanks, allowing operators to verify the status of liquid or gas without stopping the system in question. Sight glass valve castings are generally designed with a clear section to directly observe the flow to ensure system function is smooth, without contamination. Industries using sight glass valves typically are those where the flow of the fluid or gas needs to be monitored, and contain hygiene, safety, and cleanliness aspects such as food and beverage, pharmaceutical, chemical processing, and water treatment.