VETUS marine air vents to prevent water to siphon into the exhaust system and into the engine itself.
Fixing a Salt Water Drip from a Clogged Vetus Anti-Siphon Valve
Vetus Anti Syphon Device w valve 38 mm hose ASD38V (*2438SH)
Buy Anti Siphon Valve Fuel Tank Fitting 1/4in NPT online at Marine
Alert ! This could sink your boat!
Anti siphone valves for boats - VETUS
Vetus anti-syphon valve
Replacement Valve for Vetus AIRVENTV (Vetus AV006)
Vetus Fuel Safe - Sheridan Marine
Vetus Anti-siphon Airvent with Valve - Marine Engineering Services