JeffA.. some good ideas there thank you
You nailed it that it seems to be a problem in my lap!

I will look into how/if this boiler is grounded. I “think” there is a grounding strap coming off the backside but how what where it goes I can’t recall

You are also correct in that it only “appears” this is isolated. Without cutting the other boiler lines open I can’t be sure. The only thing I can be sure of is these lines have failed twice and the other has not.

I suspect there is at least a contributing issue with the volute/impeller being imperfect and causing cavitation and flow issues...
I was told the pump seal had failed a while back (less than a year old) and the impeller was in bad shape and replaced as well at that time. I heard the impeller housing was not in great shape and getting the new impeller in was “tricky”.
Obviously that’s not good..


She never made it past the bedroom door, what was she aiming for...?
She's gone shootin..