Backflow Distributors Home



Model 420XL


Zurn Wilkins Model 420XL

Zurn Wilkins Lead-Free Pressure Vacuum Breaker Assembly

Ideal for use where Lead-Free* valves are required. Designed for installation on indoor and outdoor point of use applications to protect against backsiphonage of contaminated water into the water supply. During start-up and operation a separate diaphragm seals the air inlet from the water supply preventing spillage. The assembly is designed for use under constant pressure and provides protection where a potential health hazard exists.


3/4" - 1"

Winterizing Your Irrigation System