yep, low point water drains for when you are 'winterizing' or want to remove as much residual water from your lines.... you can also remove the water heater drain plug to allow it's water to drain out, as well.
also, opening your outside shower or any interior faucet will allow these to drain more fully and quickly
'14 Palazzo 33.3 bunkhouse 34' diesel
KingTailgater2 Dish HD, 100w/5a SOLAR, BlueOx
110,000+mi since '14 - US, Alaska, Canada (also, '14 Gulfstream Amerilite and '07 ForestRiver Rockwood) : )b