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Backflow & Irrigation Information
Backflow Installation Drawings
Backflow Installation Drawings
3" to 10" Backflow Preventer in an Above Ground Box (PDF)
3" to 10" Backflow Prevention Assembly in an Underground Vault (PDF)
3" to 10" Backflow Prevention Detector Assembly in an Above Ground Box Overhead View (PDF)
3" to 10" Backflow Prevention Detector Assembly in an Underground Vault (PDF)
3" to 10" Manifold Above Ground Backflow Preventers (PDF)
3" to 10" Manifold Backflow Preventers in an Under Ground Vault (PDF)
3" to 10" Reduced Pressure Principal Assembly in an Under Ground Vault (PDF)
3" to 10" RPZ Assembly in an Underground Vault (PDF)
3" to 10" Vault Containing Both Fire Protection and Domestic Backflow Preventers (PDF)
3/4" to 2" Backflow Preventer in an Above Ground Box (PDF)
3/4" to 2" Manifold Backflow Preventers in an Above Ground Box (Optional Heat Tape Installed) (PDF)
3/4" to 2" Manifold Backflow Preventers in an Above Ground Box (PDF)
Typical Water Meter/Backflow Preventer/Pressure Reducing Valve Order of Installation (PDF)
Double Check Assembly no longer allowed; Must be RPZ (Reduced Pressure Zone). Everything must be above ground with exception of vaults holding 3 inch lines and up.
Backflow Installation Drawings
Certified Backflow Testers
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