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  1. Backflow Preventers - The Home Depot

    Get free shipping on qualified Backflow Preventers products or Buy Online Pick Up in Store today in the Plumbing Department.

  2. Backflow Preventers - Watts

    Plumbing codes mandate that potable water supplies be protected against backflow at all cross-connections. We offer the largest selection of backflow prevention solutions for any application. from …

  3. Backflow Preventers | Zurn

    Zurn provides the complete line of backflow prevention products for fire protection, irrigation, plumbing, retrofit, and waterworks projects.

  4. What Is a Backflow Preventer? (And Do You Need One?)

    Apr 11, 2025 · Installed directly in your plumbing line, it uses one-way valves or vacuums to block backflow. Different types of backflow preventers exist based on the level of risk associated with a …

  5. Backflow Preventers - Ferguson

    Find expert-curated Backflow Preventers products from the #1 US plumbing supplier and top distributor of HVAC, waterworks, and MRO products.

  6. Backflow Valves | McMaster-Carr

    Choose from our selection of backflow valves, including check valves, check valves for harsh chemicals, and more. Same and Next Day Delivery.

  7. Amazon.com: Back Flow Preventer Valve

    New Upgraded 1"720A Pressure Vacuum Breaker Assembly, Thickened Brass Backflow Preventer Valve, Max 400 PSI, Back Siphon Valves for Irrigation System New on Amazon in past month

  8. Backflow Prevention Valves - Grainger Industrial Supply

    When it comes to Backflow Prevention Valves, you can count on Grainger. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support.

  9. Backflow Preventers & Valves - SupplyHouse.com

    Backwater Valves are used to prevent water or sewage backup into a building as a result of inadequate drainage. These valves ensure a unidirectional flow to prevent backups to homes, businesses, and …

  10. Preventing Backflow: Selecting the Right Check Valve

    Mar 10, 2025 · What Is a Check Valve? The fundamental purpose of a check valve, also known as a nonreturn or one-way valve, is to prevent a reversal of flow in the pipeline. They allow fluid, whether …