https://skygeneralservices.com/glossario/backflow-preventer-explained/
What is : Backflow Preventer - Sky General Services
A backflow preventer is a device used to protect water supplies from contamination. It is designed to prevent the reverse flow of water, which can occur when
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https://meranigroup.com/a-plus-backflow/what-is-backflow/
What Is Backflow and Cross-Connection? | A-Plus Backflow
Apr 16, 2026 - Learn what cross-connections and backflow are, how they affect water safety, and why testing and inspections are required for compliance.
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