Taco 409-3-3/4 Inch Brass Air Vent | PartsHnC

The Taco 409-3 is a heavy-duty air vent intended for commercial HVAC systems. It is composed of sturdy brass and has a female 3/4-inch National Pipe Thread connection, which enables it to endure pressures of up to 150 psi. An essential function of this automatic air vent is to keep air from building up in hydronic heating and cooling systems. Retained air pockets within the system can cause corrosion, lower efficiency, and obstruct water flow. Using a float mechanism, the Taco 409-3 automatically releases built-up air. The vent's conical design enhances clearance between the water level and internal components, reducing the possibility of malfunction caused by debris floating on the water's surface. Overall, the Taco 409-3 helps maintain optimal system performance, increase efficiency, and avoid