The PVB Poppet Assembly is a key component in the air inlet mechanism of Zurn pressure vacuum breakers (model 720A), available in ½”, ¾”, and 1” sizes. This assembly regulates airflow by opening when system pressure drops, allowing air into the line to prevent backsiphonage and protect potable water supplies. Built for precision and durability, it ensures consistent performance and compliance with industry backflow prevention standards. The assembly includes the poppet, guide, and sealing elements for easy maintenance and repair.