A vertical pipe of relatively small dimensions that protrudes through a roof to provide for the ventilation of gases or exhaust from various combustion systems or appliances, including a heater/furnac [..]

A pipe allowing gas to escape.

A vertical pipe of relatively small dimensions which protrudes through a roof to provide for the ventilation of gasses.

The pipe that carries flue gases (products of combustion) out of your home, to the outdoors.

A pipe allowing gas to escape.

A pipe open to the atmosphere which exposes the system to atmospheric pressure at its boundary. Interpretation given in Schedule 2: of the Water Supply (Water Fittings) Regulations and Scottish Water [..]

A pipe which allows gas to escape from plumbing systems.

Pipe placed to facilitate escape of air or vapour.

A tube in which combustion gases from a combustion appliance are vented out of the appliance to the outdoors.