Double Check Valve Assembly (DCVA)

Features & Purposes

Each assembly has different features and purposes. Choose an assembly that meets your needs.

Isolating Non-Health Hazards

A DCVA is a mechanical backflow preventer that consists of two independently acting, spring-loaded check valves. It includes shutoff valves at each end of the assembly and is equipped with test cocks. A DCVA is effective against backpressure backflow and backsiphonage but should be used to isolate only non-health hazards.

Details about this system include:
  • Highly versatile
  • Install anywhere (above or below ground)
  • Low-hazard sites such as apartment buildings
  • State requires annual testing by State-certified tester
  • Used for irrigation systems supplied by City water only
Double Valve Check Assembly Installation Diagram
Double Check Valve Assembly