Wilkins 420 Pressure Vacuum Breaker Assemblies

Wilkins Series 420 pressure vacuum breaker assemblies, manufactured by Zurn, are designed for installation on potable water lines to protect against back-siphonage of contaminated water into the potable water supply. Supplied with an integral anti-freeze relief valve to reduce the risk of valve damage under intermittent, non-seasonal freezing conditions. Designed for use under continuous pressure. Assembly shall provide protection where a potential health hazard exists.

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