320RS Fresh Water Vent/Overflow

[hotrodj125]

When I fill my water tank at home and head out, I notice the vent?overflow is leaking water and when I stop, I look in the mirror and its actually running a good stream. I'm thinking it's syphoning and when we get to the camp site, its down to 2/3 tank. Antbody else have trouble with this and have any quick fix ideas? The last time, i put a bolt in the bottom of the hose and didn't loose anything, but without a vent then cause FR didn't run a vent line up to the filler.

[TURBS]

Originally Posted by hotrodj125

When I fill my water tank at home and head out, I notice the vent?overflow is leaking water and when I stop, I look in the mirror and its actually running a good stream. I'm thinking it's syphoning and when we get to the camp site, its down to 2/3 tank. Antbody else have trouble with this and have any quick fix ideas? The last time, i put a bolt in the bottom of the hose and didn't loose anything, but without a vent then cause FR didn't run a vent line up to the filler.

Do a search on here ( overflow vent)
There quite a few threads on this topic.

Turbs

[KyDan]

I don't think it would actually siphon because the vent is hopefully in the top of the
tank. But I know what you mean. My vent is just slightly uphill from the top of
my tank. On occasion I have filled it to the top due to a next stop with no
hookups or something. I've found that a significant amount can slosh out the vent
on a long haul.
One easy fix for me is simply a clothes pin on the vent line.
My fill/vent station is just to the left of my outside storage door so I can
open the door and easily reach the hoses.

If your vent line is easily accessible like mine you can do something similar.
Remember to remove the clamp when you need water!! I'm thinking a sticky note
on your water pump switch would do it.

There are others here who have used other methods. It sort of depends on you.
How often you actually need a completely full tank of water and how hard your vent hose
is to access are a couple of factors.

Good Luck!

[dr ron]

I installed a PVC 1" shut off valve. Just don't forget to open it when you want to use water. Then close it when you travel only.
Dr Ron