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Norriseal, A Dover Company; marine butterfly valves

Norriseal, A Dover Company

Norris Series 200 Butterfly Valve

Norris butterfly valves for marine and navy requirements, including Mil-V-22133s.

 

 

Unique, angle-disc butterfly valves available in both resilient-seated (Series R200) and metal-lined (Series M200) designs. Feature bi-directional, positive shutoff to 200 psig working pressure. Angle disc provides 360° uninterrupted differential sealing surface.

  • Double-shaft seals and body bushings assure smooth, low-torque operation
  • Independent flange seals
  • Rigid-backed rubber seat easily field-replaced
  • Non-wetted body available in lug or wafer designs
  • Rigid drive, precision disc-to-shaft connection
  • Available with a full range of pneumatic, electric and hydraulic actuation
  • Resilient-seated design (R200) offered in a wide variety of elastomeric seals and metallic materials
  • Metal-lined design (M200) provides positive shut-off with minimum sealing material
  • Series M200 available in Hastelloy®, titanium and many other unique alloys

Norris Series 285 Butterfly Valve

Exclusive, angle-disc butterfly valves provide bi-directional, positive shutoff to ANSI 150 standards (285 psig). Uses a rigid-drive, precision disc-to-shaft connection without load-bearing fasteners in the flow stream. Available in both resilient-seated and metal-lined configurations.
  • 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.

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