This union part which can be used in many pipes and other equipment is very helpful to people and saves time. They are generally used by mounting water discharge and similar pipes. It is also used to check in monitor for the water level in the liquid tank. The options are in our dimension table which there are within DIN and ASTM standards in the transparent PVC union with glass observation section. There are 20mm to 110mm for DIN standard and there are 1/2 inch to 4 inch for ASTM standard For both standards, our operating pressure is PN16 in all dimensions. Our PVC coupling sight glass product; *Easy to clean *It is waterproof with its special design. *Environmentally friendly. * The color, smell and taste of the water it carries do not change. Usage Areas for U-PVC Unıion Sight Glass : It is preferred to use in industrial projects, chemical projects, mining projects and pool systems.