The FIFFCO Bronze Swing Check Valve PN20 is designed to prevent backflow in HVAC systems while ensuring smooth and silent operation. Constructed from high-quality bronze and coated with durable epoxy, this valve ensures longevity and superior resistance to corrosion. The hinged clapper disc allows water flow in one direction and automatically closes when flow stops, effectively preventing backflow. Suitable for both water and neutral liquids, this valve is ideal for HVAC applications, offering reliable performance and easy maintenance.