Marine engineers and operators rely on reliable pressure and vacuum relief valves to ensure the safety and integrity of tanks and systems on board vessels. Fort Vale’s 82.5mm Flanged Hyper Maxi Relief Valve is designed to manage pressure and vacuum levels effectively, featuring a flanged connection with 4 slots equi-spaced on a 145.0 to 152.4 mm PCD. The valve’s set pressure ranges from 2 to 75 PSI (0.14 to 5.17 Bar), and set vacuum ranges from 0.5 to 26 inches of mercury (0.02 to 0.88 Bar). Constructed from 316 stainless steel for durability and corrosion resistance, the valve includes Fortyt O-rings for both pressure and vacuum applications. Approved by Lloyd’s Register of Shipping for valves with a setting of ≥ 25 PSI (1.7 Bar), the 82.5mm Flanged Hyper Maxi Relief Valve ensures compliance with stringent maritime safety standards. The valve’s weight is 6.96 kg, with a design pressure of 5.2 Bar and a test pressure of 10.2 Bar, operating within a temperature range of -55°C to 200°C. Ancillary parts such as pressure gauges and flame arresters are available to enhance system protection and monitoring.