Radiator Trap or Bleeder

MDSchaake · April 2023

I have some hot water radiators with the attached fittings. It appears to be a bleeder, but why would it be on the bottom of the radiator. I'm not sure it they may have originally been steam and converted to water, whereas they may be a trap. Does anybody know what this is?

tester22 · April 2023

may be some thing look like check valve inside it.

mattmia2 · April 2023

It is just a globe valve with a screw slot instead of a knob.

ethicalpaul · April 2023

mattmia2 said:
It is just a globe valve with a screw slot instead of a knob.

Yeah, "anti-fiddler technology"

bburd · April 2023

I believe that is a quarter turn plug valve, used to balance flow so each radiator gets its share.

Steamhead · April 2023

bburd said:
I believe that is a quarter turn balancing valve.

This. It's actually a "butterfly" valve rather than a globe valve.

Radiator Trap or Bleeder

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