Main vent

jimdav

I have two main pipes. One is probably 15 feet. The other is around 65 feet. Toward the end of the long pipe, I have a big mouth and a gorton 1 side by side of each other. Big mouth is always venting. But I felt like the gorton 1 doesn't do any venting. Am I supposed to put gorton 1 before big mouth? This way air go out through gorton 1 first before big mouth?

ethicalpaul

The Gorton #1 is much much smaller than the big mouth. It is not surprising to me that you can't detect any flow from the Gorton #1. If it were me, I'd just remove it and save it for your 15 foot main. What is on that one?

I will add that with the gorton #1 on there, the time for the steam to start moving to your radiators is probably longer than just the Big Mouth by itself, which is the opposite of what you are seeking.

The order doesn't matter here. The steam goes where it's easy, not necessarily where it's closest.

jimdav

The short main is concealed inside unaccessible crawl space. I assume none. I was just wondering if my long main venting is adequate given that the gorton 1 seems to not that helpful. Wondering if I need another big mouth.

ethicalpaul

No you almost certainly don't. The Big Mouth provides a huge amount of venting. Is it taking a long time to vent that main?