Schedule 80 PVC fittings are designed for higher pressure applications and are dark gray in color. These fittings are used to connect schedule 80 PVC pipe with a solvent weld or a thread application. You can use standard PVC glue or thread tape to assemble these fittings to pipe or each other. Schedule 80 pvc fittings are used in industrial applications that are going to run higher pressures at temperatures up to 140 degrees Fahrenheit. Schedule 80 PVC fittings sizes range from ½” up to 24”. Examples of fittings that are available are tees, couplings, elbows, flanges, unions and adaptors. George Fischer, Spears, and Lasco are the major brands that we represent in our distribution chain.