Recent content by aarpcard

Yep, built in 1908. Having only ever hear about these and never actually seen one, I was surprised to see it had two pipes going to it.

The house was built in 1908. We still have the original hot water radiators in use. There is a very, old (probably original) expansion tank in the basement. I just found this in the attic behind a removable panel in the wall. What is it? It has a large 1 1/2" pipe going into the top of it...

@Dana , @fitter30 Thanks for the replies. I definitely have some reading and research to do. To answer your questions: -The problem zones are all piped into the basement. They are the farthest 3 radiators on the parallel 4" distribution mains. The mains are indeed pitched, so these three...

Below is the layout of the system at the main boiler. The two circuits of 4" black pipe run the perimeter of the basement - at least 120 feet each. Below is the singular circulator pump for the original/black pipe circuit. Maybe it is undersized or degraded? Below is the pump for the...

Thanks Everyone for the replies. I didn't find any monoflow valves in the system. The 1st floor kitchen/3rd floor bath radiator circuit is plumbed with 3/4" copper pipe. The rest of the circuit is a two pipe system with 4" black pipe running a loop around the basement. 1.25" black pipe or...

Yep, this has always been a problem. All three do squirt about the same water as the others, however the 2nd floor bath radiator is a bit weaker (however there are weaker radiators elsewhere in the loop that don't have the heating issue). I have tried closing off the majority of the other...

Hello All, I'm not a trained plumber so forgive any mistakes on my part. I have (I think) a fairly complex hydronic heating system in my house. The majority of the system is 112 years old comprising of large cast iron radiators and black pipe. I believe this system was originally 2-pipe...