Series 285 Butterfly Valve

Norriseal Series 285 butterfly valves provide bi-directional, positive shutoff to ANSI 150 standards (285 psig) and 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.

Available in both resilient-seated and metal-lined configurations, Series 285 butterfly valves have a non-wetted body and may be specified in lug or wafer designs. They are used with a variety of pneumatic, electric and hydraulic actuation.

• Angle disc with 360° uninterrupted differential sealing surface
• Double-shaft seals and shaft bushings assure smooth, low-torque operation
• Non-wetted body available in lug or wafer designs
• Offered with a variety of pneumatic, electric and hydraulic actuation
• Series M285 valves are available in several grades of bronze, SST and high alloys such as Monel®, Inconel® and titanium

• Valve sizes: 3.0″ – 36″
• Positive shutoff to ANSI 150 standards (285 psig)
• R285: Resilient lined, wafer or lug butterfly type with replaceable body O-ring flange seals
• M285: Metal-lined, wafer or lug butterfly type