3/4" Vacuum Breaker (Lead-Free)
Mfr Part#: 34-420XL
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.