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The WILKINS RK12-420 is a complete repair kit designed for Wilkins 420 and 420XL pressure vacuum breaker assemblies. This kit provides the internal components needed to restore proper operation and backflow protection without replacing the entire assembly. It is compatible with 1/2"–3/4" Wilkins models.
Genuine Zurn/Wilkins replacement components engineered for reliable sealing and long service life. Ideal for routine maintenance and field service.
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