expansion tank pipe

Has anyone got a pic of the pipes off the disco 1 im more interested in the one with the non return valve on Which comes off the expansion tank and goes into thermostat housing and rad. I think mines rigged up wrong
Thanks in advance

The item I think you are refering to is not necessarily a non-return-valve but rather an air bleed orifice, it comes from a "y" piece and runs a single line to the header/expansion tank, one upstream leg from the "y" comes from the thermostat housing the other from the top tank of the radiator, simply to pass air from these two high points in the system into the tank and prevent accumulated air locks. I have heard of people using a simple "t" piece in absence of the original "y".
Sorry I cannot supply a photo.

However thank you your explanation has been helpful without the pic. I have the single line coming from the thermostat housing then the split bit going into the rad and expansion tank. So should the single line come from the expansion tank then split into the rad and thermostat housing

TattooMan said:

However thank you your explanation has been helpful without the pic. I have the single line coming from the thermostat housing then the split bit going into the rad and expansion tank. So should the single line come from the expansion tank then split into the rad and thermostat housing

Click to expand...

Here you go, its a bit muddy but think it shows some of what youre after? https://www.dropbox.com/s/lkxd6c4f7g89abz/2015-08-16 13.07.25.jpg?dl=0

Yep i think mines deff on the wrong way around

Cheers fellas