water tank
breather

If you have trouble filling the water tank under your camper trailer, odds are you do not have a breather hose on top for the air to escape. It is easy to install a breather.

Remove the blank plug in the top of the tank & drill a hole into the tank at the base of the threaded hole.

Install a 90 degree barbed elbow. You do not require thread tape as the fitting will bottom out & seal itself. Thread tape will flatten the thread. You may have to place the end of the hose in some boiling water to get it over the barb of the breather elbow.

There is no pressure in the hose so you do not need a hose clamp to secure it. Attach a suitable length of 12mm drinking grade water hose. This type of hose does not taint your drinking water.

Reinstall the water tank & connect the end of the breather hose to the breather on the filler. Most good water fillers have a breather outlet built into them.

If you do not have a breather outlet on the filler, place the end of the breather hose as high as you can & secure with hose clips or cable ties. If you have it down low you could easily get your drinking water contaminated crossing a creek or just full of dust.

You should not have any trouble filling the tank now with a hose at full pressure.

It is a good idea to drop your water tank & remove any stones that are caught between the stone shield & water tank, particularly if you have travelled over kilometres of gravel roads, so they do not wear a hole in the plastic tank.