2 1/2″ MEGA SUPERVENTIX™ flanged safety relief valve – designed to protect tanks against accidental overpressure or excessive vacuum. With a smart compact design, the 2 1/2″ MEGA SUPERVENTIX™ has a high flow performance. This product consists of a HALAR coated body and Hastelloy, Titanium & PVDF poppet insuring an extreme resistance to corrosion. Its plastic protection cap placed on top of the coverlid maximizes corrosion resistance.