Brand: Fisher

Fisher 8580 High Performance Butterfly Valve

Name: Fisher 8580 Butterfly Valve – Brochure & Price Quote
Brand: Fisher

Description

Overview

The Fisher 8580 High Performance Butterfly Valve is Emerson’s field-configurable rotary control valve, built around an eccentrically-mounted disc that can be fitted with either a soft seal or a metal seal ring depending on the shutoff class and temperature the application demands. This flexibility lets one valve platform serve both moderate-temperature tight-shutoff duty and elevated-temperature general process service, which is a major advantage for procurement teams standardizing spares across a mixed process unit. The actuator/valve assembly can also be converted between push-down-to-open and push-down-to-close action without additional parts, giving instrumentation engineers freedom to match fail-safe direction to the process safety requirement after the valve has already been ordered or installed.

Working closely with plant engineers in the region, Seven Star LLC proudly supplies the 8580 High Performance Butterfly Valve to industrial buyers throughout Oman and the GCC, with manufacturer documentation and technical support. Plants in Muscat, Sohar, and Salalah depend on this traceable supply chain when project specifications call for SIL-capable, PED, CRN, or NACE-certified rotary control valves with traceable Fisher documentation.

Operating Principle

The Fisher 8580 rotates its disc through roughly 90 degrees of travel, and because the disc is eccentrically mounted relative to both the shaft and the seat plane, it lifts cleanly away from the seat as soon as rotation begins rather than dragging across the sealing surface. Both the metal and soft seal ring options use a pressure-assisted sealing action, meaning that increasing upstream pressure actually improves the seal’s contact force against the seat, which is what allows the 8580 to hold tight shutoff regardless of the pressure drop across the valve at the moment of closure.

Redundant shaft retention is built into the mechanical design: the packing follower, an anti-blowout ring, and a machined shaft groove all interact to hold the shaft securely inside the valve body, adding a layer of protection beyond the primary retaining mechanism found on simpler butterfly valve designs. Combined with the standard conductive packing for electrical bonding in hazardous areas, this gives the 8580 a safety margin suited to critical isolation duty as well as routine throttling, and it operates at elevated process temperatures once the appropriate high-temperature trim components are selected.

Engineering Design of the Fisher 8580

The Fisher 8580 body is available in carbon steel, stainless steel, or alloy construction, giving specifying engineers a broad materials envelope to match corrosive, erosive, or high-temperature process fluids without switching to a different valve family. Two independent means of travel indication are provided: an indication line machined into the shaft and disc position markings on the packing follower, so operators can visually confirm valve position from multiple vantage points during commissioning or field inspection.

Because the push-down-to-open/push-down-to-close conversion requires no additional hardware, the same physical valve body can be re-configured in the field to match a revised control philosophy, reducing the spare parts burden for plants running mixed fail-open and fail-closed loops. The valve mounts standard Fisher rotary actuators and FIELDVUE digital valve controllers through a common bolt pattern, and its SIL-capable, ATEX, PED, CRN, and Fugitive Emission certifications mean the 8580 can be specified directly into safety instrumented systems and export-certified process packages destined for GCC energy projects.

Key Features

The Fisher 8580 combines configuration flexibility with proven eccentric-disc shutoff performance for demanding rotary control valve applications.

The actuator/valve assembly action converts between push-down-to-open and push-down-to-close without requiring any additional parts.
Both metal and soft seal ring options use pressure-assisting sealing action for tight shutoff regardless of pressure drop direction.
Standard conductive packing provides electrical bonding, supporting safe use in hazardous area classifications.
The valve operates at elevated process temperatures when fitted with the appropriate high-temperature trim components.
Dual travel indication, via the shaft indication line and packing follower disc markings, simplifies field verification of valve position.
Redundant shaft retention, combining the packing follower, anti-blowout ring, and shaft groove, adds protection against shaft ejection.
Body materials span carbon steel, stainless steel, and alloy construction to match a wide range of process fluid conditions.
Certifications including SIL capability, PED, CRN, ATEX, CUTR, and Fugitive Emission compliance support specification into safety-critical GCC projects.

Industrial Applications

The Fisher 8580 High Performance Butterfly Valve is specified across oil and gas processing, petrochemical plants, power generation stations, and district cooling and desalination facilities where a single rotary valve platform must serve both general service throttling and higher-temperature, tighter-shutoff duty within the same procurement package. Its field-reversible actuator action and dual seal-ring options make it especially useful on projects where the fail-safe direction of individual loops is finalized late in the engineering phase.

With fast quotation turnaround and technical support, Seven Star LLC distributes the 8580 to plant operators and EPC contractors across the Sultanate of Oman and the GCC, supporting refinery and petrochemical developments in the Sohar and Salalah economic zones as well as utility and power projects around Muscat. Buyers sourcing through this trusted supply channel receive Fisher 8580 valves with verified SIL, PED, and NACE certification paperwork, along with Seven Star LLC’s local engineering support for seal-ring selection and actuator sizing.

Technical Specifications

The table below summarizes the primary specifications for the Fisher 8580 High Performance Butterfly Valve.

Parameter	Specification
Model	Fisher 8580 High Performance Butterfly Valve
Valve Type	Eccentric disc, high-performance rotary butterfly valve
Seal Options	Soft seal ring or metal seal ring, pressure-assisted sealing action
Actuator Action	Field-convertible push-down-to-open or push-down-to-close
Body Material	Carbon steel, stainless steel, or alloy
Flow Characteristic	Linear
Critical Service	General service
Operating Temperature	Standard temperature and high temperature (with appropriate trim)
Shaft Retention	Redundant: packing follower, anti-blowout ring, and shaft groove
Certifications	SIL capable, PED, CRN, Fugitive Emission, NACE, ATEX, CUTR
Travel Indication	Shaft indication line plus packing follower disc position markings

Request a Quote for Fisher 8580 High Performance Butterfly Valve

Seven Star LLC invites process engineers and procurement teams across Oman and the GCC to submit a formal RFQ for the Fisher 8580 High Performance Butterfly Valve. With engineering support in Muscat, Seven Star LLC sources on request with lead time confirmed at quotation, supplies complete technical datasheets on request, and connects buyers with our instrumentation division for seal-ring selection, actuator sizing, and certification verification. Contact Seven Star LLC today to request a quotation for Fisher 8580 valves with local support.

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About brand

Fisher is the control valve brand of Emerson. Its history starts in 1880 in Marshalltown, Iowa, where William Fisher, working at the town waterworks, invented a constant-pressure pump governor and founded a company to make it. Emerson bought Fisher Controls in 1992, and Marshalltown remains a main engineering and manufacturing site for Fisher valves. The brand covers control valves, actuators, FIELDVUE digital valve controllers, regulators and level controllers.

Seven Star LLC is an independent supplier listing Fisher control valves, actuators, positioners, regulators and spare parts for buyers in Oman and the GCC. Replacement valves and trim are matched from the serial number on the valve nameplate.

Fisher company profile

Origin	William Fisher's constant-pressure pump governor, Marshalltown, Iowa, USA (1880)
Ownership	Owned by Monsanto from 1969; sold to Emerson in 1992 and combined with Rosemount as Fisher-Rosemount, later Emerson Process Management. Today a brand of Emerson.
Main site	Marshalltown, Iowa, USA
Product families	Sliding-stem and rotary control valves, spring-diaphragm and piston actuators, FIELDVUE digital valve controllers, pressure regulators, displacer and digital level controllers
Typical duty	Throttling control of liquids, gas and steam, high-pressure and severe service, instrument supply and gas pressure reduction

Milestones

1880: William Fisher builds a constant-pressure pump governor in Marshalltown, Iowa.
1969: Monsanto acquires Fisher Controls.
1992: Emerson buys Fisher and combines it with Rosemount as Fisher-Rosemount, later Emerson Process Management.

Fisher valves, actuators and instruments

Series	Type	Typical use
easy-e ES, ET, EZ	Sliding-stem globe and angle valves	Cage-guided globe valves: ES with unbalanced plug, ET with balanced trim for higher pressure drop; EZ unbalanced with a seat ring retainer for viscous or dirty fluids
GX	Compact globe valve with integral actuator	Standard chemical and process duty where a compact valve package is preferred
HPT, HPAT	High-pressure globe and angle valves	Pressure classes up to ASME CL2500, compressor recycle and high-pressure letdown
V150, V200, V300, V250	Vee-Ball segmented ball and full-bore ball control valves	High-capacity control of liquids, gas and fibrous or slurry service
CV500	Eccentric rotating plug valve	Erosive, coking and dirty service
8560, 8580	High-performance butterfly valves	Large-line throttling and on-off control
657, 667, 1052, 1061, easy-Drive	Spring-diaphragm, piston and electric actuators	657 and 667 for sliding-stem valves; 1052 and 1061 for rotary valves; easy-Drive where no air is available
FIELDVUE DVC6200, DVC2000, 3610J	Digital valve controllers and positioners	HART positioning with valve diagnostics; 3610J pneumatic positioner for rotary actuators
627, 1098-EGR, 67C	Pressure regulators	Gas pressure reduction, pilot-operated regulation and instrument air supply
DLC3100, 2500	Digital and pneumatic level controllers	Displacer level and interface on separators and scrubbers

Where Fisher valves are used

Fisher control valves and regulators are standard equipment in oil and gas production, refineries, gas processing and LNG, petrochemicals, power plants and water systems. Typical loops are separator level and pressure, compressor anti-surge and recycle, fuel gas pressure reduction, feedwater and steam control, and chemical dosing. FIELDVUE controllers add diagnostics that help plan valve maintenance before a turnaround.

Ordering Fisher valves and spare parts: what we need

For spares, send the serial number from the valve nameplate together with the valve type, size, pressure class, trim and actuator type and size. Emerson keeps the build record behind the serial number, so plug, seat ring, cage, packing and diaphragm kits can be matched without guesswork. For a FIELDVUE or regulator, send the full model and type number and the mounting details. For a new valve add the process data: fluid, flow range, inlet and outlet pressure, temperature, leakage class, fail position, air supply and signal.

Facts checked against Emerson Fisher product information and published company histories, October 2026.

Browse Fisher products by category: Control Valves, Valve Actuator, Valve Positioner, Regulators, Level Transmitter.

Frequently Asked Questions

What is the difference between the soft seal and metal seal options on the Fisher 8580?

The soft seal ring is typically used for tighter shutoff at moderate temperatures, while the metal seal ring extends the valve into higher-temperature service. Both use a pressure-assisted sealing action that improves shutoff as pressure increases.

Can the Fisher 8580 be converted between fail-open and fail-closed configurations?

Yes. The actuator/valve assembly action can be converted from push-down-to-open to push-down-to-close, or vice versa, without any additional parts, allowing field reconfiguration to match the required fail-safe direction.

What certifications does the Fisher 8580 carry for GCC energy projects?

The 8580 is available with SIL capability, PED, CRN, Fugitive Emission, NACE, ATEX, and CUTR certifications, supporting specification into safety instrumented systems and export-certified process packages.

What body materials are available for the Fisher 8580?

The 8580 body is offered in carbon steel, stainless steel, or alloy construction, allowing the valve to be matched to a wide range of process fluid corrosion and temperature requirements.

Is Seven Star LLC an experienced supply partner for Fisher products?

Yes, Seven Star LLC is an experienced supplier of Fisher in Oman and the GCC, supplying Emerson-manufactured valves, actuators, and instrumentation with local technical support.

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