Resilient Seated Wafer Type Butterfly Valves

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

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”