Norriseal Series M285 Butterfly Valves
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Cut sheet to ValveOverview
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.
Specifications
| Sizes | 3″ to 36″ |
| Pressure ratings | 200 psig |
| Temperature range | -40 °F to 250 °F |
| Standards | |
| Body | Cast iron, Ductile iron, Nickel aluminum bronze |
| Disc | Ductile iron, Carbon Steel (WCB), Nickel Aluminum bronze |
| Seat | NBR, EPDM, Fluoroelastomer (Viton) |
Features
- 100% bubble-tight positive shutoff
- Full rated bi-directional shutoff
- Field replaceable resilient seat
- Non-wetted body designs
- Wide selection of materials available
- Meets ANSI B16.5 code for Class 150 flange
pressure/temperature rating - Sizes 3” through 36”
