PVC DWV fittings are for drain, waste and vent purposes. They are used in gravity-fed waste elimination systems and are for Non-Pressure systems where temperatures will not exceed 140 F. PVC is lightweight and easy to install. They require no special tools for cutting and be installed with solvent cementing, threading, flanging and roll-grooved joining. California Prop 65: This product can expose you to chemicals including titanium dioxide andcarbon blackwhich are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov