Toilet Trap & Drain Schematic - Vent and Sewer Line Cutaway Diagram

This document is a simple black-and-white line schematic (with blue shading for water) showing a cutaway side view of a standard toilet and its drain plumbing. The only text labels on the drawing are "Vent" and "To Sewer." The illustration depicts the toilet tank sitting atop the bowl, the water level in the bowl and trapway (shown in blue), and the S-shaped internal trap passage rendered in black. The trap connects through a floor flange to a horizontal drain pipe that runs to a vertical stack; the downward branch is labeled "To Sewer" and the upward continuation of the stack is labeled "Vent." A reader can learn from this diagram how a toilet's built-in trap holds standing water, how the waste line ties into the drain-waste-vent (DWV) system, and how the vent pipe rises above the drain connection while sewage flows downward to the sewer. Although uploaded to an automotive gallery (attributed to a 1990 Ford Bronco), the document contains no vehicle-specific information, part numbers, fuse data, or wiring details; it is purely a plumbing/vent-trap concept schematic, likely used as an analogy (companion images in the album include "Clog.jpg" and "PCV.jpg").