Header Tank

[deezee]

Right, The coolant header tank I have is utterly unsuitable as its overflow only and not pressurised! Can anyone recommend a simple (ideally square) coolant header tank that has a pressurised cap on it?

Also, does the header tank need an in and an out on it? Or can you just break into a rad hose with a Tee Piece and have it connected that way? The more I look into different manufacturers coolant systems, the more complex they seem.

[gingea1pom]

Deezee,

I am working on radiators and header tanks tomorrow.

My Ford header tank has one outlet of about 15mm at the bottom and one over flow by the cap, if this helps.

Cheers Ginge

[flyerncle]

Audi A4 and the like have a flat oblong header tank with pressure cap and lower outlet and vent pipe at the top,even fitted with level warning.
Not too expensive new.

[deezee]

Where do you plumb the overflow into off the header tank then? I assume you can't just go to atmosphere as its going to stop pressure building and not raise the boiling point.

[gingea1pom]

I think the way it works is the overflow is above the pressure relief bit of the cap.

So the over flow is also were the excess pressure goes.

I think.

Cheers Ginge

[teun]

Take a look here:http://www.emeng.gentlyhosting.co.uk/Cooling/Part1.htm