The Zurn Wilkins 720A pressure vacuum breaker assembly is designed for compatible plumbing and backflow-prevention applications where dependable protection against reverse flow is needed. A pressure vacuum breaker is useful because it helps protect the water supply from backsiphonage, supporting cleaner system performance and more reliable safety within the installation.This assembly is especially useful when the original breaker is leaking, damaged, worn, or no longer operating correctly. Matching the correct 3/4 inch 720A configuration helps preserve intended fit and restore dependable backflow-prevention support in compatible plumbing systems.The 34-720A is a practical service part when a compatible plumbing setup needs a pressure vacuum breaker assembly to restore dependable protection and stable operating performance. Zurn Wilkins 720A pressure vacuum breaker assembly 3/4 inch configuration Designed for compatible backflow-prevention applications Useful when the original assembly is leaking or failing Supports cleaner and more dependable plumbing protection