Water tank wonders

MarkandDeb · Veteran Member

Water tank wonders

spida · Guru

Turn you pump off then turn a tap on - do you have an outside one. you need to let the air out as you fill the tank.

SnowT · Guru

Sounds Like one of the tank's is not hooked up to a breather pipe..

Juergen

grae and deb · Senior Member

hi m an d , ours were the same a real mongrel to fill , big improvement was to get under and make sure tha that the filler hose once it leaves the fitting you put your fill hose into , dosent have any bends in it if it does go up and down over a chassis rail or whatever it will create a air pocket and thus water blow back , cant get past the air pocket , we did this , found one small rise and fall enough to make it blow back every time , staightened it out , and big improvement or once again also check your breather tubes although unlikely , but you neve know , good luck or try this , use your over flow or drain bungs in your tank coupled together , to a non return valve , a nylex brass hose fitting and connect to tap , drain tap at end of line you use to connect the tanks , use your normal fillers as breather when filling we did this in the end , we get a lot more in our tanks too and no blow back , i,ll attach a few pics

-- Edited by grae and deb on Wednesday 10th of September 2014 08:20:44 PM

-- Edited by grae and deb on Wednesday 10th of September 2014 08:22:01 PM

Baz421 · Guru

Looks like you have some answers Juergen and grae and deb.

Sound like our original problem,,, breather not in top of tank or not connected.

Fix the problem and you will probably achieve a ful tank for the first time. We fill by hose from the A frame into the tank breathers and open the fillers on the side. This method even fills the filler hose.

CAUTION: If you pressure fill MAKE SURE YOU CAN LET THE AIR OUT OR YOU'LL LIKELY BLOW A HOSE often near the filler,,, the flexible one.

It can be fixed. Cheers Baz

MarkandDeb · Veteran Member

Thanks for the input guys.
I will be under the van on the weekend to sort this problem out.

I knew there must be answer somewhere.

Thanks again.

M&D

Legendts · Senior Member

I had the same problem but with all my tanks. Problem was when filling to overflow (from the inlet) it also fills the breather pipe and so I always had no ability for the tank to release the air. What I ended up doing was put a "T" in the drain line with another valve, added a snap on fitting and now fill from the bottom of the tank with the hose. The breather is now the fill pipe. Got the idea of another forum contributor and works a treat.

robo24 · Senior Member

I had almost given up but replaced 12mm breathers with 19mm on advice from the forum and joined with a TEE piece to allow air to escape,attached a hose to each tank so as to fill separately if needby.I now find i can fill through vanside filler pushing hose down about 400mm.