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The patented NIDEL Model 50H high flow double check backflow preventer is intended for irrigation purposes and designed to protect hose connections from backflow contamination in freezing and non-freezing conditions. Uses include outside hose bibbs, wash racks, dairy barns and swimming pool areas.
From the Manufacturer
Anti-siphon vacuum breakers are designed to protect hose connections from contamination. Vacuum breakers are designed for laboratory use to provide protection against back siphonage and backflow from aspirators or hoses left in contaminants.
Robert Bussey Jr.
Reviewed in the United States on April 30, 2025
worked great
ricardo hernandez
Reviewed in the United States on September 24, 2018
Fit like it was made for.
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