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So I recently put a new Big mouth vent on my main in addition to the one installed last season. I extended the branch so it was away from any water. So as I'm insulating my hot water piping the boiler kicks on and runs its normal cycle and suddenly the second big mouth vent starts puking water everywhere. Probably about a quarter of a cup of fluid came out. My question is is it a faulty vent I would be more apt to think so if it was the original one I purchased but this one is only about two to three weeks old. I'm not certain if my setup is incorrect the boiler runs near the end of the cycle about a pound and a quarter of pressure.