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Butterfly valves are named for 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.
| 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. 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. Only solid and abrasion-resistant plastic disc and elastomeric liner are wetted parts. ISO bolt circle on top flange - no body or stem modifications required for accessories.
| Sizes: Lever: 1-1/2" - 8" Gear: 8" - 16" Models: Wafer style Operators: Lever and gear Bodies: PVC, PP and PVDF Discs: PVC, PP and PVDF Seats: EPDM or FKM. Also: Nitrile, Butyl, Hypalon®†,
and Neoprene®† Seals: Same as seating material Stems: 403 and 316 stainless steel, titanium,
Hastelloy C®‡, etc.
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| - Series 79 Pneumatic
- Series 92 & 94 Electric
- Series 83 Electromni
| Pneumatically and electrically actuated with accessories Alternate discs: Gear operators for 1 1/2"- 6" Lug style (stainless steel 304 or 316) as
blocking and end-of-line applications Stems in 316 stainless steel, titanium,
Hastelloy C® etc. 2" square nut on stem 2" square nut on gear operator Stem extensions (single stem and two-piece stem) Locking devices (gear type - standard on lever) Chain operators Manual limit switch Tandem arrangements (patented by A/A, Inc.)
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| Chemical Processing Water & Wastewater Landfills Irrigation Food Processing Mining
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