It seems there might be a bit of confusion in your question. The drain line of a washing machine should not extend to the washer itself, as it wouldn't serve any practical purpose. The drain line is responsible for removing wastewater from the washing machine and directing it to a proper drainage system.
Here's how a typical washing machine drain setup works:
Drain Hose: The washing machine has a drain hose, usually made of flexible plastic or rubber, that connects to the back of the machine. This hose is used to carry the used water (wastewater) from the washing machine's tub to the drain pipe or a utility sink.
Standpipe or Wall Drain: The other end of the drain hose is either placed into a standpipe or directly connected to a dedicated drain line in the wall. A standpipe is a vertical pipe that extends upward from the floor or a utility sink. It helps create a siphon effect that prevents water from flowing back into the machine.
Proper Slope: The drain hose should have a proper slope to ensure that water flows smoothly and doesn't cause any clogs or backups.
Air Gap: To prevent the possibility of backflow, some local building codes may require an air gap between the drain hose and the standpipe or drain line.
In summary, the washing machine drain line should not extend to the washer itself. Instead, it should be connected to a suitable drain point to remove wastewater effectively and prevent any potential flooding or other drainage issues.