80 to 2000mm diameter Cast iron grade 250 (EN-GJL-250) Metal to metal seals for durability and low leakage rates Robust construction for durability Wall or pipe mounted Double door flap valves available for reduced head loss Integral cast lifting lugs as standard Seals resistant to erosion by grit Double hung to ensure full face sealing
400 to 2000mm square Cast iron grade 250 (EN-GJL-250) Metal to metal seals for durability and low leakage rates Robust construction for durability Wall or pipe mounted Double door flap valves available for reduced head loss Integral cast lifting lugs as standard Seals resistant to erosion by grit Double hung to ensure full face sealing