Why were cast rads plumbed top and bottom for flo and return

[Agile]

A few modern immitations of CI radiators do have baffles, to behave like a TBOE radiatior..Zehnder, for example...that baffle is only two sections from one end, and the bleed valve is the opposite end. The radiator has to have the flow opposite the bleed valve..

At last someone confirms what I said is true in some cases!

Thanks Alex!

So much for the "historic" experience of some of the others! Perhaps they need to keep more up to date with current developments?

Tony

 

[gaswizzard]

A few modern immitations of CI radiators do have baffles, to behave like a TBOE radiatior..Zehnder, for example...that baffle is only two sections from one end, and the bleed valve is the opposite end. The radiator has to have the flow opposite the bleed valve..

At last someone confirms what I said is true in some cases!

Thanks Alex!

So much for the "historic" experience of some of the others! Perhaps they need to keep more up to date with current developments?

Tony

Tony , you knew full well the OP was reffering to the old 'school' type radiators and not the type Alec is speaking of which don't have the facility to be able to plumb for TBOE.

 

[gaswizzard]

But many c/i/ rads need a blockage in the bottom centre to ensure adequate flow.

Arn't the ones your refering too made of steel and NOT CI.

 

[NickCastrads]

Hi there

I run **** - we produce modern cast iron radiators near **** using the traditional method of sectional radiators, gaskets and joining nipples.

There are no baffles in our cast iron radiators, nor in any reclaimed radiator I've come across in 15 years of experience. To make our radiators TBOE, we simply connect the valve bushes in that configuration. There is (in my opinion) no disadvantage to either BBOE or TBOE in either gravity-fed or pumped systems. My advice would be to install your radiators BBOE.

I would strongly advise you install a magnetic filter on your system to protect your boiler.

Hope this helps.

Best wishes
Nick
****