What is the role of a vent connector in a fuel-gas system?

The role of a vent connector in a fuel-gas system is to serve as the pipe or duct that connects a fuel-gas burning appliance, such as a furnace or water heater, to a vent or chimney. This connection is crucial because it allows for the safe and effective removal of combustion gases produced by the appliance.

When the appliance burns fuel, it creates gases that need to be vented outdoors to maintain indoor air quality and safety. The vent connector ensures that these harmful combustion byproducts do not accumulate inside a building, which could lead to hazardous conditions such as carbon monoxide poisoning. Proper design and installation of vent connectors are essential to ensure that exhaust gases are efficiently directed outside while providing an adequate draft for the appliance to operate safely.

In the context of the other choices, the pipe carrying gas to the gas meter pertains to the supply side of the gas system, rather than the venting function. The device that measures gas pressure is a separate instrument used for monitoring gas supply. Lastly, the component that filters impurities from the gas is focused on maintaining gas quality rather than venting combustion gases.