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Resilient Seated Butterfly Valves - Wafer Style

Norriseal-Wellmark resilient seated wafer butterfly valves are used in applications up to 285 pounds of working pressure (150 ANSI) and are lighter and more cost-effective than metal seated options. Their unique sealing design is field-proven to provide longer seat life than comparable competitor resilient seated designs. Wafer options are typically used with smaller valves and in lower-pressure applications compared to lug-style designs.

  • Available working pressure of 200 psi, 285 psi (ANSI 150)
  • Size ranges: 2” – 24”
  • Body materials: Ductile iron, carbon steel, Nickel aluminum bronze, bronze, aluminum
  • Seat material options: Buna, Viton, EPDM Neoprene
  • Temperature rating: -20 – 250° F
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Norriseal Resilient Seated Wafer Style Butterfly Valves

Norriseal Series 200

Resilient Seated Wafer Style Option

Norriseal Series 200 butterfly valves provide bi-directional, positive shutoff to 200 psig working pressure. They are available in both resilient-seated (Series R200) and metal-lined (Series M200) configurations. All Series 200 butterfly valves feature a unique, angle disc that creates a 360° uninterrupted differential sealing surface. Series 200 butterfly valves have double-shaft seals and body bushings to assure smooth, low-torque operation. They are available with a full range of pneumatic, electric, and hydraulic actuation.


Series 200 butterfly valves have independent flange seals and a non-wetted body that may be specified with either lug or wafer design. All Series 200 butterfly valves are easily repaired in the field. 

 

Features

  • 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
  • Resilient-seated design (R200) offered in a wide variety of elastomeric seals and metallic materials.
  • Metal-lined design (M200) provides positive shutoff with minimum sealing material
  • Available with a variety of pneumatic, electric and hydraulic actuation

Norriseal Series 285

Resilient Seated Wafer Style Option

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.


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.

Features

  • 100% bubble-tight positive shutoff
  • Full-rated bi-directional shutoff
  • Field replaceable resilient seat
  • Non-wetted body body designs
  • Wide selection of materials available
  • Meets ANSI B16.5 code for Class 150 flange pressure/temperature rating
  • Sizes 3” through 36”

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