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    DCA Applications in Irrigation Systems

    DCAs are suitable for systems with lower risk, where contaminants pose a nuisance risk rather than a serious health hazard. You’ll often find double check valves around lawn sprinklers without chemical injectors and basic irrigation systems without fertilizers or pesticides. Double check assemblies are a great choice for residential and commercial settings because they are less expensive than higher-grade backflow preventers like RPZ assemblies.

     

    Double Check Assembly FAQs

    Is a DCA required for all irrigation systems?

    Not always. Some irrigation systems may only require simpler backflow preventers, like pressure vacuum breakers (PVBs), depending on local codes. A DCA is required when the system poses a risk of backpressure or backsiphonage but does not involve hazardous chemicals.

    What factors should I consider when selecting a double check assembly?

    First, consider your system’s water pressure capacity. Ensure the DCA is rated for your irrigation system's pressure levels, or it may fail. Next, match the DCA size to your system's pipe diameter. Finally, verify the device meets local codes and regulations.

    Are DCA backflow preventers suitable for high-risk systems?

    DCAs cannot provide the same level of protection as RPZ assemblies in situations involving health hazards, such as chemical injection in irrigation systems. Unlike an RPZ, a DCA does not have a relief valve to release potentially contaminated water.

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