3/8" MFL x 3/8" MFL Dual Check Valve - 304 Stainless Steel Inline Backflow Preventer

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3/8" MFL x 3/8" MFL Dual Check Valve - 304 Stainless Steel Inline Backflow Preventer

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  • Redundant Backflow Security: The dual check valve design provides two independent stages of protection, making it the most reliable inline backflow preventer for soda and beer systems.
  • 304 Stainless Steel Construction: Manufactured from 304 grade stainless steel, this valve is completely resistant to the acidic environment of carbonated water and soda syrups.
  • Universal 3/8" Flare Fittings: Equipped with 3/8 inch MFL threads, allowing for seamless integration into standard beverage gas lines and water inlet manifolds.
  • Contamination Prevention: Specifically engineered to stop reverse flow contamination, protecting your primary water source and expensive CO2 regulators from damage.
  • Commercial Grade Reliability: A heavy-duty beverage system safety valve that meets the rigorous demands of high-volume restaurants, breweries, and soda fountain installations.

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This premium 304 stainless steel dual check valve provides redundant backflow protection for high-pressure beverage dispensing and carbonation systems. Featuring 3/8" Male Flare (MFL) connections on both the inlet and outlet, this inline safety valve is engineered to prevent the migration of CO2, carbonated water, or syrup back into primary water lines or gas regulators. Its dual-chamber design offers a critical secondary fail-safe, ensuring that even if one internal seal is compromised by debris, your equipment remains shielded from contamination and corrosive backflow.

  • Inlet Connection: 3/8" Male Flare (MFL)
  • Outlet Connection: 3/8" Male Flare (MFL)
  • Material: Food-grade 304 Stainless Steel Body and Internal Springs
  • Valve Type: Redundant Dual Check (Inline Configuration)
  • Application: Soda carbonators, water filtration loops, and gas-to-liquid barriers
  • Compliance: High-resistance seals for beer, soda, and carbonated water systems
  • Pressure Rating: Designed for standard commercial beverage dispensing pressures
Technician's Note: When installing an MFL-to-MFL dual check valve, always utilize a nylon flare washer (gasket) on both ends to ensure a gas-tight seal. Unlike NPT threads, flare fittings rely on the mechanical crush of the washer rather than thread tape. If you notice a reduction in flow rate over time, check the inlet side for "sugar-lock" or mineral scale; these valves can be cleaned by soaking in a warm, mild alkaline solution, but should be replaced if the internal springs show any signs of fatigue or loss of tension.

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