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Vetus Anti Syphon Airvent with Valve 13 - 32mm

The Vetus Anti-Syphon Airvent Type V has a reliable pressure valve and is self contained. It requires periodic maintenance to prevent clogging with salt crystals.

Can be connected to hoses with internal diameters of Ø 13, 19, 25 and 32 mm (½”, ¾”, 1” & 1¼” ). 

Why fit an anti-syphon device?
If the point where the cooling water is injected into the exhaust is less than 15cms above the waterline, then when the engine is stopped, there is a risk that cooling water will siphon into the exhaust system and subsequently into the engine itself. Such siphoning may be prevented by fitting a VETUS air vent at least 40 cm above the waterline.

Housing : Made of synthetic material
Valve : Made of synthetic and stainless steel.

Mounting brackets are available for both types of air vent, to facilitate installation onto surfaces clad with sound insulation


  • Length : 162 mm
  • Width : 98mm
  • Height : 50mm

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