Safety Spray Shields are used to prevent injury to personnel or damage to equipment in the event of a leak or spray-out of acids, caustics, chlorine and dangerous liquids at piping connections. These connections line includes flanges, valves, or expansion joints, which is found in chemical, pulp/paper, petrochemical and wastewater treatment plants. They are commonly referred to as flange guards, flange covers, flange diapers or flange protectors. These shields are constructed from Teflon , polypropylene, PVC, polyethylene and stainless steel. They are used for preventing spray-out of hazardous chemicals due to gasket or packing failure on flanges, valves and expansion joints.