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Fisher A11 High Performance butterfly valve

The Fisher™ A11 valve is a reliable, high performance butterfly valve for both throttling and on/off applications. Available in either a wafer or single-flange design, it maintains tight shutoff, and can be specified for a wide range of pressure and temperature conditions, including cryogenic applications.

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Andreas Christoffersen
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Account Manager
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Account Manager
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Account Manager
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Account Manager
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Pekka Immonen
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Taneli Luhanko
Inside Sales Engineer
Phone. +358 207 416 202
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Specifications
Features
Product request

Certifications	PED, CRN, Fugitive Emission, NACE, ATEX, CUTR, Fire Safe
Critical Service	General Service
Flow Characteristics	Linear
Material	Carbon Steel, Stainless, Alloy
Operating Temperature	Standard Temperature, High Temperature, Cryogenic
Power Source	Electric, Hydraulic, Pneumatic, Electro-Hydraulic
Pressure Class	ASME
Process Connection Type	Flanged, Single Flanged, Double Flanged, Lugged, Wafer
Seat / Seal Type	Metal, Soft
Shutoff Class	Class IV (FCI 70-2), Class V (FCI 70-2), Class VI (FCI 70-2)
Standards	B16.34
Stem	Live Loaded, Adjustable Packing
Valve Size	NPS 3, NPS 4, NPS 6, NPS 8, NPS 10, NPS 12, NPS 14, NPS 16, NPS 18, NPS 20, NPS 24, NPS 30, NPS 36, Custom inlet/outlet, Up to NPS 72
Valve Size Standard	NPS

Choose from square, keyed, or splined shaft connections.
The pressure-assisted seal design provides tight shutoff.
Trim and bolting materials are available for applications involving sour liquids and gases.
The valve body self-centers on the line flange bolts as a fast, accurate means of centering the valve in the pipeline.
Seal retainer screws are located so there is no interference with the sealing function of either flat sheet or spiral-wound line flange gaskets.
A feature of the valve design is that the torque necessary to open and close the valve is the same, regardless of the direction in which the differential pressure is applied.
Interchangeability of all parts, including shafts and disks, simplifies service and reduces maintenance costs.

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Fisher A11 High Performance butterfly valve

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