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The name of this valve comes from the wing-like action of the flow-controlling disc, which operates at right angles to the flow. The disc has about the same diameter as the connecting pipe, and the flow is straight through, with a low pressure drop. Maintenance is easy due to the small number of moving parts. The butterfly valve can be used either as an on/off or modulating type of valve. Type 56 valve has no metal to media or environment contact whatsoever. These valves may be operated manually, electrically, or pneumatically.
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Standard model (1-1/2" - 14") has PVC Body and PP Disc for better chemical resistance at temperatures higher than can be achieved with PVC. 16" has PP body and PP disc as standard.
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Our 316/403 stainless steel shaft has full engagement over the entire length of the disc and is a non-wetted part, totally isolated from the media.
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Only solid and abrasion-resistant plastic disc and elastomeric liner are wetted parts.
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ISO bolt circle on top flange - no body or stem modifications required for accessories.
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Sizes: Lever: 1-1/2" - 8"
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Gear: 8" - 16"
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Models: Wafer Style
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Operators: Lever and Gear
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Bodies: PVC, PP and PVDF
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Discs: PVC, PP and PVDF
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Seats: EPDM or FKM, Also Nitrile, Butyl,Hypalon®†,
and Neoprene®†
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Seals: Same as seating material
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Stems: 403 and 316 stainless steel, titanium,
Hastelloy C®‡, etc.
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- Series 79 Pneumatic
- Series 92 & 94 Electric
- Series 83 Electromni
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Pneumatically and electrically actuated with
accessories
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Alternate discs:
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Gear operators for 1 -1/2"- 6"
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Lug style (Stainless Steel 304 or 316) as
blocking and end-of-line applications
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Stems in 316 stainless steel, titanium,
Hastelloy C® etc.
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2" square nut on stem
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2" square nut on gear operator
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Stem extensions (single stem and two-piece
stem)
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Locking devices (Gear Type - Standard on Lever)
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Chain operators
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Manual limit switch
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Tandem arrangements (Patented by A/A, Inc.)
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Chemical Processing
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Water & Wastewater
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Landfills
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Irrigation
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Food Processing
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Mining
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