Zurn (Wilkins) 420XL Model is a solid, time-tested Pressure Vacuum Breaker. Designed for installation on water lines to protect water from backsiphonage, the result is free from polluted impurity potable water. Supplied with an integral relief anti-freeze valve to reduce the risk of valve damage under light freeze conditions. Has a simple (fewer parts) design.
|End Connections:||FNPT (ANSI B1.20.1)|
|Hydrostatic Test Pressure:||350 PSI.|
|Maximum Working Water Pressure:||175 PSI|
|Maximum Working Water Temperature:||140°F|