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Learn more about Backflow Preventers!

Backflow Preventers are designed and installed to provide protection against back siphonage of contaminated liquids into your drinking water.

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  1. Febco 765 PVB Backflow Preventer 1" FPT | FE765-100
    Febco 765 PVB Backflow Preventer 1 in. FPT | FE765-100
    On-Sale $190.07 List Price $267.95
    HLSG SKU: FEB765010
    SKU: FE765-100
  2. Conbraco 4A-500 Freeze Resistant PVB Backflow Preventer 1" FPT | CDC4A-505-A2F
    Conbraco 4A-500 Freeze Resistant PVB Backflow Preventer 1 in. FPT | CDC4A-505-A2F
    On-Sale $103.28 List Price $165.95
    HLSG SKU: CNB4A505A2F
    SKU: CDC4A-505-A2F
  3. Wilkins 720A PVB Backflow Preventer 1" FPT | WK720A-100
    Wilkins 720A PVB Backflow Preventer 1 in. FPT | WK720A-100
    On-Sale $131.43 List Price $299.95
    HLSG SKU: WLK720A010
    SKU: WK720A-100
  4. Conbraco 4A-500 Freeze Resistant PVB Backflow Preventer 3/4" FPT | CDC4A-504-A2F
    Conbraco 4A-500 Freeze Resistant PVB Backflow Preventer 3/4 in. FPT | CDC4A-504-A2F
    On-Sale $96.63 List Price $142.95
    HLSG SKU: CNB4A504A2F
    SKU: CDC4A-504-A2F
  5. Febco 765 PVB Backflow Preventer 2 in. FPT | FE765-200
    Febco 765 PVB Backflow Preventer 2 in. FPT | FE765-200
    On-Sale $717.89 List Price $1,499.95
    HLSG SKU: FEB765020
    SKU: FE765-200
  6. Wilkins 720A PVB Backflow Preventer 3/4" FPT | WK720A-075
    Wilkins 720A PVB Backflow Preventer 3/4 in. FPT | WK720A-075
    On-Sale $113.10 List Price $299.95
    HLSG SKU: WLK720A007
    SKU: WK720A-075
  7. Wilkins 710 PVB Backflow Preventer 3/4 in. FPT | WK710-075
    Wilkins 710 PVB Backflow Preventer 3/4 in. FPT | WK710-075
    On-Sale $88.48 List Price $120.95
    HLSG SKU: WLK710007
    SKU: WK710-075
  8. Febco 765 PVB Backflow Preventer 1-1/4 in. FPT | FE765-125
    Febco 765 PVB Backflow Preventer 1-1/4 in. FPT | FE765-125
    On-Sale $588.11 List Price $1,395.95
    HLSG SKU: FEB765012
    SKU: FE765-125
  9. Wilkins 710 PVB Backflow Preventer 1 in. FPT | WK710-100
    Wilkins 710 PVB Backflow Preventer 1 in. FPT | WK710-100
    On-Sale $102.72 List Price $135.95
    HLSG SKU: WLK710010
    SKU: WK710-100
  10. Watts 800M4QT PVB Backflow Preventer 1" FPT | WA800M4QT-100
    Watts 800M4QT PVB Backflow Preventer 1 in. FPT | WA800M4QT-100
    On-Sale $198.70 List Price $249.95
    HLSG SKU: WAT800M4QT010
    SKU: WA800M4QT-100
  11. Febco 765 PVB Backflow Preventer 1-1/2 in. FPT | FE765-150
    Febco 765 PVB Backflow Preventer 1-1/2 in. FPT | FE765-150
    On-Sale $645.93 List Price $1,029.95
    HLSG SKU: FEB765015
    SKU: FE765-150
  12. Febco 765 PVB Backflow Preventer 3/4" FPT | FE765-075
    Febco 765 3/4" PVB Backflow Preventer FPT | FE765-075
    On-Sale $169.29 List Price $238.95
    HLSG SKU: FEB765007
    SKU: FE765-075
  13. Febco U765 PVB Backflow Preventer with Union End Ball Valve 1 in. Union End Ball Valve | FEU765-100
    Febco U765 PVB Backflow Preventer with Union End Ball Valve 1 in. Union End Ball Valve | FEU765-100
    On-Sale $312.81 List Price $425.95
    HLSG SKU: FEB765U010
    SKU: FEU765-100
  14. Watts 800M4QT PVB Backflow Preventer 3/4" FPT | WA800M4QT-075
    Watts 800M4QT PVB Backflow Preventer 3/4 in. FPT | WA800M4QT-075
    On-Sale $160.67 List Price $205.95
    HLSG SKU: WAT800M4QT007
    SKU: WA800M4QT-075
  15. Wilkins 720AU PVB Backflow Preventer w/ Union 3/4 in. | WK720AU-075
    Wilkins 720AU PVB Backflow Preventer w/ Union 3/4 in. | WK720AU-075
    On-Sale $131.48 List Price $260.00
    HLSG SKU: WLK34720AU
    SKU: WK720AU-075
  16. Febco 765 PVB Backflow Preventer 1/2 in. FPT | FE765-050
    Febco 765 PVB Backflow Preventer 1/2 in. FPT | FE765-050
    On-Sale $165.96 List Price $234.95
    HLSG SKU: FEB765005
    SKU: FE765-050
  17. Febco U765 PVB Backflow Preventer with Union End Ball Valve 3/4 in. Union End Ball Valve | FEU765-075
    Febco U765 PVB Backflow Preventer with Union End Ball Valve 3/4 in. Union End Ball Valve | FEU765-075
    On-Sale $256.90 List Price $473.99
    HLSG SKU: FEB765U007
    SKU: FEU765-075
  18. Backflow Installation Accessory Kit 1" | SW-FLOWKIT-1
    Backflow Installation Accessory Kit 1 in. | SW-FLOWKIT-1
    On-Sale $19.64 List Price $31.60
    SKU: SW-FLOWKIT-1
  19. Backflow Installation Accessory Kit 3/4" | SW-FLOWKIT-2
    Backflow Installation Accessory Kit 3/4 in. | SW-FLOWKIT-2
    On-Sale $15.58 List Price $23.60
    SKU: SW-FLOWKIT-2
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