What is the minimum required pitch for vent connectors per 10 feet of horizontal run?

The minimum required pitch for vent connectors per 10 feet of horizontal run is typically 1/4 inch per foot for gas venting systems, which translates to a total of 2 ½ inches of rise over a 10-foot horizontal run. This pitch is crucial to ensure that any condensation can drain back towards the appliance instead of accumulating in the vent line. Proper sloping of vent connectors minimizes the risk of water buildup that could lead to operational inefficiencies or dangerous situations, such as the potential for backdrafting. Ensuring the correct pitch is a key component in maintaining safe venting practices in gas systems.