Anti-Siphon Tank Vent

Anti-Siphon Tank Vent

5 out of 5 Customer Rating
  • In Stock
Ships from supplier, typically 2-3 weeks.

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Model # 568444 Mfg # 1670-3
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A fuel vent with added baffles to prevent sea and washdown water from entering the fuel system.

Attwood tank vents feature a unique baffle system to eliminate the introduction of sea and washdown water into the fuel system while allowing air to pass freely. This 90° fitting mounts in hulls up to 9/16" thick and provides more direct hose routing to the tank. Ideal for vents installed in coamings or other space limited locations. These vents feature a removable cover that stands 1" off the mounted surface and allows inspection and removal of debris. The cover can also be removed for system pressure tests. Installation requires an additional 1 1/2" above the vent to accommodate the anti-siphon valve. To keep unwanted water out of the fuel system, look to Attwood P-Trap Vents for the solution.

Key Features

  • Keeps water out of fuel system
  • Provide fuel system venting
  • Removable cover allows inspection and debris removal
  • Cover can be removed for pressure testing procedures
  • Prevents the need to install anti-siphon loop in vent hose
  • Will not meet EPA certified system requirements
  • Two-year warranty


  • Hose Size: 5/8"
  • Maximum Hull Thickness: 9/16"
  • Approvals: ABYC H-24


Material Glass-Filled Polypropylene
Type Vents
Cancer and Reproductive Harm -