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Property Inspection Command Center 24 items

Backflow Preventer & Cross-Connection Inspection

An annual field test and cross-connection survey of reduced-pressure and double-check backflow assemblies protecting the potable water supply, documenting differential pressures, check-valve tightness, and relief-valve operation.

USC FCCCHR ManualAWWA M14ASSE 5000

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Assembly and Site Identification

  • Property address and assembly location *
  • Assembly type *
  • Manufacturer, model, and size of the assembly *
  • Serial number
  • Degree of hazard protected against *

Installation Conditions

  • Assembly is installed at the correct orientation and height above grade *
  • Assembly is protected from freezing and physical damage *
  • Relief-port drain and air gap are unobstructed and not submerged *
  • Test cocks and shutoff valves are present and operable *
  • Photo of the installed assembly

Check Valve and Relief Valve Test

  • Differential pressure across the first check valve (psid) *
  • Second check valve holds tight against back-pressure *
  • Relief valve opens at 2.0 psid or greater *
  • No continuous discharge from the relief port under normal supply pressure *
  • Shutoff valves hold tight during the test *

Cross-Connection Survey

  • No unprotected connections to auxiliary water sources, boilers, or irrigation observed *
  • Hose bibbs are fitted with atmospheric vacuum breakers where required *
  • Chemical, fire-suppression, or process piping is separated from potable lines by an approved assembly *
  • Notes on cross-connection hazards found

Result and Certification

  • Overall assembly test result *
  • Corrective action taken or required
  • Certified tester name and certification number *
  • Date of test *
  • Tester signature *

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