Tjernlund Products DC4 Single Acting Draft Control 4"

The Tjernlund Products DC4-Single Acting Draft Control is a 4-inch part to regulate chimney draft for oil, gas, or coal-fired furnaces, boilers, or water heaters. It opens inward to relieve excessive draft pressure and provide stable combustion, and prevent energy loss.It provides better fuel efficiency and appliance safety by controlling the airflow to optimum. It is commonly used in HVAC systems to reduce burner cycling and protect heat exchangers from thermal stress. However, its compact design makes it a perfect fit for installation in either residential or light commercial setups as it provides a solid solution in terms of improved performance and an increased equipment life.