Which side of radiator should bleed valve be on?

[andyr123]

Hi all .

I have just noticed that the bleed valves on a lot of our radiators are on the same side as the TRV's - some other radiators have them opposite the TRV/Flow side but majority on the TRV side.

Does it matter where the bleed valves are positioned on CH radiators?

I would have thought logically that the bleed valve should be across from the flow so that the flow pushes the water and air and as you open the bleed valve then the air expels? - or does it not matter on modern heating system where the bleed valve is these days?

The CH pump is on the return side in the outdoor boiler unit by the way if that has any barings and looks like it pulls from the return rather than pushes from the flow pipe.

I would have thought it worked as in diagram - the air pushing out in the direction opposite to where the water flows in (flow pipe) ?

Thanks
Andy.

 

[Mister Banks]

the radiator should have been installed level so it doesn't matter which side the bleed valve is.

 

[andyr123]

the radiator should have been installed level so it doesn't matter which side the bleed valve is.

oh good, it does not matter then . Yes all radiators are level on the wall

 

[terryplumb]

Makes no difference.

 

[andyr123]

thank you all