[notanlines]

William, as mentioned they are low point drains to be used when you winterize your RV. You can open all your faucets throughout your trailer and open the valves on the drains and the water will all flow out onto the ground leaving very little in your system. Your fresh water tank will have a drain also. Keep in mind that this action is only a starter for the winterization process. The system still needs to be either blown out with compressed air (completely) or antifreeze pumped into the system. You will find a shut-off at the water heater so that it can be drained instead of filling it with antifreeze. If you do a search on this forum or use your friend Google there will be specific directions to be found. I'll also bet that you can find a video of your particular unit on Youtube.com.