Description
The Field Controls 46486901 4” Vent Damper Less Harness GVD-4 is a mechanical airflow control component designed to regulate and restrict exhaust gas flow through venting systems when heating equipment is not in operation. It operates by opening during burner operation and closing when the system is idle, helping reduce standby heat loss and improve overall efficiency. Installed in gas-fired furnaces and boilers, it is mounted in the vent pipe to manage flue gas movement safely and effectively. This component is applied in HVAC systems as a vent control accessory that supports proper draft management, energy conservation, and safe exhaust operation.
