Red Line Tube

 Zight is a company specialized in the manufacturing of process viewing equipment, Our main products include sight glasses for viewing a process, Red Line Tube and gauge glasses for the optical vision of the level in tanks. At Zight Glass, we specialize in the manufacturing equipment for the optical observation of fluids. Mainly this translates into the direct observation of level in tanks, the direct observation of a flow line, or the direct observation of the process inside a tank.