G.S HIGH TECHER – 250 A – AIR VENT HEAD

The G.S High Techer 250 A Air Vent Head is a high-performance, marine-grade automatic closing device engineered to ventilate ship ballast, fuel, and freshwater tanks while preventing seawater ingress. Constructed in a compact, box-type layout, this lightweight steel unit utilizes a specialized half-ball float and a flexible snap-lip seal gasket to deliver tight, watertight sealing during heavy seas and pitching without creating internal vacuum resistance.