Originally Posted by Grantley
I have a blue pex line coming from FW tank. We de-winterized this weekend while at our first trip and I sanitized FW tank but found a leak while filling.
Could be the previous owner didnít put the plug back in (if thatís the case, thatís an easy fix with a new plug or ball valve). Wanted to verify thatís what this could be and if this is the case I wonít blow up the FW tank filling it? Other reading has me concerned that this may be an overfill pipe, but considering itís near the bottom of the FW tank, it seems unlikely.
If an air bubble gets in there will it ďburpĒ itself when I run water through the pump?
It would appear to be the drain for fresh water tank. Low point drains are placed into your water lines and generally hang down from the RV. These are commonly blue (cold) and red (hot) water lines. Some come with valves some with plugs, some with screw on caps.
Depending on the fill area some units have separate connections for filling the fresh water tank. On our RV we switch a valve to "tank" to fill then switch it back to "city" to use campground water.
If you can take a pic of the area were you hook up water. Also add a pic of underneath it may show the low point drains