Best Of
Re: Air vent substitute??
you should be able to drill and re-tap thise vent ports. You may need to go a size larger
You can get 1/4 & 3/8 sizes

Re: Cast iron radiator output tables are wrong?
These are handy to have, install one at the boiler, at the radiator, wherever. Insulate over the sensor to get accurate readings. Battery or 24V, the battery lasts for years.

Re: Frequent Boiler Interruption
Well… the first thing to do is to figure out what is shutting the boiler down. It might be low water. It might be high pressure. It might be a wonky connection somewhere. It might be a combustion or fuel delivery problem to the burner. Until you figure out what the actual problem is, you don't have much hope of fixing it.
It's unlikely to be a rash of bad traps. First off, they usually fail open — they'd have to fail closed to trap condensate. So honestly that's about the last place I'd look for a problem.
So figure out what is shutting off the boiler…
Like, for starters, what are you doing to "reset" the boiler manually? Which button do you push?
Re: Cast iron radiator output tables are wrong?
It seems like a lot of people have a problem with others trying to understand what is going on around them and how things work.
I don't understand why that is. Learning is important as is understanding how things work and why we do what we do.

Re: B & G Dou - Flo Valve??? Main loop Supply/ Return and Secondary loop Supply / Return
Thank you all for taking your time on this I feel truly honored. I also strive to be as knowledgeable as you gentlemen one day, as I sit here at the dinner and study. I wish I had the opportunity to be under your wings. Thank you again @hot_rod @delcrossv @EBEBRATT-Ed
Re: Indirect DHW Question
How's your water. Test for chlorides if you want a stainless tank.
I have had the best luck with glass lined steel tanks. This tank is sold under different brand names. Bock, Laars, now BW, Lochinvar.
Dual anodes, brass drain, large smooth coils, a nice pro quality tank.
How much hot water are you needing? 40- 50 gallons covers most homes, unless you nave a large soaking tub or other high load need?

Re: Funny but not so funny
Imagine how much water my service pipe leaked in the 10-12 years it was leaking underground.
Re: gas steam boiler heating problem
Therefore there is no way that I can tell you -- or even suggest to you -- which option you, personally, should take.
Re: gas steam boiler heating problem
I would just repair what is causing the problem(s). Which is probably NOT the boiler or the copper pipe at the boiler since apparently it has worked fairly well for decades.