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Double Check Assemblies (DCA)


Double check valve assemblies (DCVA) are the most commonly approved type of device for inline underground sprinkler systems and a good choice for interior or underground installations. These backflow preventers are less susceptible to frost damage because they are usually installed below ground or in a basement making sprinkler system winterization much simpler.

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  1. Wilkins 350FT DCA Backflow Preventer with SAE Male Test Cocks 1" FPT | WK350FT-100
    Wilkins 350FT DCA Backflow Preventer with SAE Male Test Cocks 1 in. FPT | WK350FT-100
    On-Sale $219.75 List Price $461.95
    SKU: WK350FT-100
  2. Wilkins 350FT DCA Backflow Preventer with SAE Male Test Cocks 1-1/2" FPT | WK350FT-150
    Wilkins 350FT DCA Backflow Preventer with SAE Male Test Cocks 1-1/2 in. FPT | WK350FT-150
    On-Sale $597.35 List Price $980.95
    SKU: WK350FT-150
  3. Wilkins 350 DCA Backflow Preventer 1 in. | WK350-100
    Wilkins 350 DCA Backflow Preventer 1 in. | WK350-100
    On-Sale $148.17 List Price $254.00
    SKU: WK350-100
  4. Wilkins 350BOF DCA with Blow Out Flush Fitting 1-1/2" FPT | WK350BOF-150
    Wilkins 350BOF DCA with Blow Out Flush Fitting 1-1/2 in. FPT | WK350BOF-150
    On-Sale $344.25 List Price $1,049.95
    SKU: WK350BOF-150
  5. Wilkins 350BOF DCA with Blow Out Flush Fitting 2" FPT | WK350BOF-200
    Wilkins 350BOF DCA with Blow Out Flush Fitting 2 in. FPT | WK350BOF-200
    On-Sale $374.75 List Price $1,206.95
    SKU: WK350BOF-200
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