In plumbing the roof vent should be a min of 4" to prevent hoarfrost
Of course that is why any legitimate master plumber will install a vent pitching upwards from the fixtures it is serving so the condensation will flow back to the drain or in severe cases a drip leg is installed
The Fresh Air Inlet (FAI) is where the venting system starts as it draws the colder air into the system and allows it to vent through the vent terminal
Install an automatic air vent on the line
no, for health reasions,
4 " vent to prevent hoarfrost and pitch pocket around the pipe filled with bituminous material 4 " vent to prevent hoarfrost and pitch pocket around the pipe filled with bituminous material
If there is no vent off the kitchen sink you would need to install an in-line vent.
By removing foul sewer fumes and venting them to the outside air nomally through the vent terminal knowing warm air rises
A auto vent
WHICH VENT If you're talking plumbing roof vents or soffit or ridge attic air vents; absolutely not!! I can't thing of a single vent that would be opened and closed at will.
Vent into an unused room.
Yes BUT not an outside wall