PVC DWV Schedule 40 P-Trap with Solvent Weld Joint is used to prevent sewer gas from entering the building/room. Used in sanitary drain, waste, and vent (DWV), sewer and storm drainage applications. They are used in gravity-fed waste elimination systems and are for Non-Pressure systems where temperatures will not exceed 140 degree F. PVC is lightweight and easy to install. They require no special tools for cutting, and can be installed with solvent cementing, threading, flanging, and roll-grooved joining.