Vetus Air Vent Anti Syphon Device With Hose
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Vetus  Air Vent  Anti Syphon Device With Hose

Vetus Air Vent Anti Syphon Device With Hose

  • Hose ID: 1-1/2", Material: Synthetic, Air Bleed Connection: Rotating
  • For Wet Exhaust Systems, Under-Waterline Heads and Waste Discharge
  • Includes: 13' of Hose, Hose Clamps and Skin Fitting
  • Item #: 
    Model #: 
    Shipping Weight: 
    2.00 Lbs.
    List Price: 
    Our Price:
    Status:     Call to confirm



    The Vetus anti syphon device helps to prevent cooling water from siphoning back into the exhaust and ultimately into the engine when it is off. This is critical on boats where cooling water is injected into the exhaust less than 6 inches above the waterline.

    Vetus Exhaust System Information


    • Siphoning may be prevented by fitting the air vent at least 40 cm (15.75") above the waterline
    • The air bleed connection rotates 360° for an easier installation and can be removed without the use of tools
    • Can be easily dismantled by hand for cleaning
    • This version has a hose connection to the outside of the hull, there is a constant bleed off of cooling water through this hose while the engine is running
    • Also suitable for use with under waterline heads and or the discharge pipe of a waste water tank
    • Comes complete with a skin fitting (thru-hull), hose clamps and 4 meters (13') of hose


    • Fits hose ID: 1-1/2"
    • Width: 5.08" (129mm)
    • Thickness: 1.89" (48mm)
    • Height: 4.21" (107mm)

    Note: Mounting bracket available separately


    Imperial dimensions are approximate. The manufacturer built this product to metric specs.

    WARNING: This product MAY expose you to chemicals, which are known to the State of California to cause cancer, birth defects and/or other reproductive harm. For more information go to

    Vetus Hose Connectors
    Item #: 305432
  • Fits Hose ID: 1-1/4" - 2-1/4"
  • Material: Synthetic
  • Cut Fitting to Accommodate Desired Hose ID
  •  Include

    Model #:

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