help with adding steam mian vents

warren_4

I have been working on our steam heat per dans books and am now at the step of adding dream main vents because there are none on our system. I have been reading about tapping our main pipes to add them, but need a little guidance.



What size should I tap our 1.75 and 3 inch main pipe. Also size and type drill bit to use with the size of tap. I have bought a tap set with sizes up to 1/2 inch.



I really appreciate help. I'm trying to get my system optimally before the new jersey winter sets in. Thanks

JStar

Vents

I never liked the idea of tapping a piece of pipe or fitting. We always see them leaking at some point. I would try to get real fittings on the mains to add the vents. It'll be a lot less prone to leaks, and lot easier to add additional vents in the future, if needed.