vetus exhaust system air vents
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Vetus Air Vents for Exhaust Systems

Vetus air vents prevent sea water from siphoning back through the exhaust into marine engines. Also called a vented loop, it is used as a siphon break for marine toilets and holding tanks. This siphon break is critical for engines utilizing a wet exhaust system. Vent mounts in the coolant line before the mixing elbow with the exhaust gas. Ideal installation is 16 inches above the water line.

Two types are available. AIRVENTH comes with 12 feet of hose to connect the vent to the outside of the hull. When the engine is running a constant bleed of cooling water trickles out. Along with the 12 feet of hose comes a skin fitting and hose clamps.

AIRVENTV model has a pressure valve and is self contained. It does require periodic maintenance to prevent clogging with salt crystals.

Repair kits also available. See "Product Info" tab for specifics.

 
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Tech Spec Product Info User Generated Content
BRAND: Vetus
Type: Air Vents
4 2

REVIEW SNAPSHOT®

by PowerReviews
Vetus Air Vents for Exhaust Systems
 
4.0

(based on 2 reviews)

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4.0

Fast Shipping

By Raggamuffin

from Mt Sinai, NY

About Me Advanced

Verified Buyer

Pros

    Cons

      Best Uses

      • Engine

      Comments about Vetus Air Vents for Exhaust Systems:

      I needed to add a vent to prevent water siphoning into my exhaust line. I only happened occasionally, but this should prevent future occurences.

      • Was this a gift?:
      • No

      (2 of 2 customers found this review helpful)

       
      4.0

      Directing valve

      By Night Flight

      from New Bern NC

      About Me Advanced

      Verified Reviewer

      Pros

      • Easy to Use
      • Protects Well

      Cons

        Best Uses

        • Engine

        Comments about Vetus Air Vents for Exhaust Systems:

        I have rebuilt "conventional" anti siphon valves to direct the small amount of salt water that they blow during operation. Since these anti-siphon valves must be mounted high, this "spitting" eventually corrodes something below them.
        I've never understood why valve makers haven't made this design a standard.
        I'm told this valve also seems not to require as much servcing as most. Time will tell. . .

        • Was this a gift?:
        • No

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