Main vent.

Niss3zx · June 17

I am aware this set up is incorrect. Any other options to configure? I plan to replace this gorton # 2 with a Barnes & Jones big mouth to obtain more height. As you can see from the pic I had to make a hole in basement ceiling to obtain some room. Have some more room going upwards but am limited. This is a multi family building with parallel long runs approx 30ft. I plan to change both sides with the Big mouth and replace the short runs with The gorton #2. Weil mclain Eg-75 series boiler i believe its a 282,000 btu

ethicalpaul · June 17

It's not optimal but it's fine. I would not replace it with a big mouth.

As long as your boiler water isn't surging into the main, there is nothing to be concerned about. And if it is surging into the main, you want to fix that problem anyway, not put a bandaid on it by raising your vent.

Steamhead · June 17

Agreed. But in a larger building you might need more venting. How long are your steam mains, and what pipe size? This will help us determine what you need.

STEAM DOCTOR · June 18

https://forum.heatinghelp.com/discussion/comment/1898758#Comment_1898758

Agreed 100 percent.

Niss3zx · June 19

2in pipe with appox 35ft long. I have two parrell runs each with 3 splits going up to risers on 3rd floor.

Main vent.

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