water system

[scottironsbtinternet.com]

This is complicated so bear with me.I have an onboard water tank that runs via a wall switch,ie when the external water runs out I flick the switch on the wall to internal.The onboard water tank froze solid during the big freeze and the onboard pump cracked so I replaced it.What happens now is when you run a tap on external the flow is poor because half off the flow is going into the on board tank,when the on board tank fills up I flick the switch back to internal and the system works fine.Any ideas of what is wrong?

 

[readcaravans]

the original onboard tank pump would have had a non-return valve fitted as standard, but the replacement pump doesn`t. come across this before especially on the older bailey senators.

 

[scottironsbtinternet.com]

Thanks that makes sense,as you said it is an older Senator (02),can I buy a pump with a non-return valve?Thanks again...

 

[readcaravans]

you can, or fit a non-return valve inline in the pipe to the onboard pump. if you chose to do this, make sure the non-return valve is in the right way.

 

[scottironsbtinternet.com]

Thanks again for your help,I take it I could get an inline valve from a caravan shop?

 

[readcaravans]

should be able to get them from any caravan shop. if you struggle let me know.

 

[scottironsbtinternet.com]

Thank you very much for all off your help.

 

[forestgump]

does it hve a diverter switch .

 

[readcaravans]

not on a 2002 senator

 

[forestgump]

sorry didnot no it was 2002 i am getting big probs with internet lost 3 days did not read post

 

[scottironsbtinternet.com]

I called a couple of caravan shops today and they have the valve,the wee problem I have is they are asking what diameter the pipe is,I have no idea as the van is on site 50 miles away and I would like to buy the valve this week and fit it at the weekend.Do you have any idea what diameter the pipe is ?

 

[dougie_374468830]

12mm

 

[scottironsbtinternet.com]

Thanks

 

[readcaravans]

scott,

i think dougie is right, but i can check at work tomorrow if you want because i think we have a 2002 senator on the showground?

 

[scottironsbtinternet.com]

That would be great Read caravans,thank you very much.

 

[TimM]

If you go the in line valve route its definietly worth getting a spare. Had to replace the internal pump on an 02 Wyoming and went the in line valve route. The valve used to fail about twice a year, the innards just broke up. Also most of the in line valves are a larger diameter than fit easiy in the pipe so if you have this situation, heat the ends of the pipe up with a hair dryer or hot water so you can slip them over the ends of the valve more easily and reduce the risk of damaging the valve. Hope this helps.

 

[scottironsbtinternet.com]

Hi Tim thanks for the info. I know about the hair dryer trick, were snouts did you put the inline valve? Ie is it right next to the pump so that it's in the onboard tank or further down the line?

 

[scottironsbtinternet.com]

Hi Tim thanks for the info. I know about the hair dryer trick, were snouts did you put the inline valve? Ie is it right next to the pump so that it's in the onboard tank or further down the line?

 

[scottironsbtinternet.com]

Abouts that should read not asnouts. Lol

 

[readcaravans]

Hi Scott,

the inside diameter of the pipe is 12mm

 

[scottironsbtinternet.com]

Thanks very much I will get the wife to get one tomorrow.

 

[TimM]

The valve has to go in the pipe connected to the internal pump before it joins the rest of the system. From memory we put it somewhere on top of the internal tank where it was easy to get at it. Wouldn't recommend submerging it inside the tank as you have unnecessary clips underwater.

 

[readcaravans]

i have to agree with tim. fit it in-line outside the tank.

 

[scottironsbtinternet.com]

Hi guys, I will bow to your greater knowledge and do as you say about where to put it. Thank you once again for all your help guys.