Schedule 80 PVC, often abbreviated SCH 80, is a designation for PVC pipe and fittings that have met and conform to ASTM requirements. ASTM is one of the world's largest, not-for-profit voluntary standards developing organizations in the world; meeting the standards set forth ensures a quality product for customers. At Drainage Connect, all of our pipe is ASTM 1785D certified and all of our fittings are ASTM 2665 certified. Schedule 80 PVC has a max operating temperature of 180 degrees Fahrenheit (60 degrees Celsius). For temperatures above 73 degrees Fahrenheit, the pressure is derated. To learn more about Schedule 80 PVC , please view our resource pages.