Norriseal Series M285 butterfly valve

Series 285 butterfly valves provide bi-directional, positive shutoff to ANSI 150 standards (285 psig). They feature an exclusive angle disc with a 360°uninterrupted differential sealing surface.Series 285 butterfly valves offer outstanding flow efficiency, with a rigid-drive, precision disc-to- shaft connection that eliminates load-bearing fasteners in the flowstream. Double-shaft seals and shaft bushings assure smooth, low-torque operation.