Double Check Valve Assemblies | Backflow Prevention 

This video is a description of the Double Check Valve Assembly which is one of the more popular forms of Backflow Preventer used on residential sprinkler systems. I'll explain the components, then take one of the check valves apart for a "skill builder exercise."
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Backflow Prevention is an important part and sometimes neglected part of irrigation. When diagnosing and repairing sprinkler systems, you should be aware of problems that could originate in the backflow preventer.
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This video is a part of our online video course:
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Download our Free Troubleshooting Guide PDF. 9 pages that covers the 9 most common issues with irrigation systems.
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Para subtítulos en español, asegúrese de que los subtítulos CC estén activados, luego haga clic en Configuración (la rueda dentada) y luego haga clic en Subtítulos y luego en Español.