Can An Old Return Line Cause Wet Steam ?

SteamHeat

If your condensate return line is old and has a nice inner liner of bioslime / crud effectively narrowing the inner diameter of the pipe, could this cause your steam to be wet ?

jpf321

it's possible that ..

slow returns *MAY* be causing the water to stack up above your "A" Dimension and spilling out into your overhead mains, this would cause wet steam for sure. Don't forget that if you have 2" mains, and you are 2" above your "A" Dimension, your mains (at least the ends of them) are FULL UP with water. 

SteamHeat

Good Points.

Thank you. These are very good points to consider.



I am going to be replacing my return line soon and I was wondering if it might solve a gurgling radiator vent valve that does not seem to have any other explanation.



Regards.