Description
Product Description
The Fisher 8590 High Performance Butterfly Valve ensures tight shutoff and is suitable for a wide range of pressure and temperature conditions. It features a lugged body design for versatile installation. The valve can be paired with different actuators, including spring-and-diaphragm or pneumatic piston actuators (using a splined shaft), as well as handlevers, handwheels, or pneumatic piston diaphragm actuators (with a square or keyed shaft), providing flexibility for various control applications.
Specifications
| Specifications | Details |
|---|---|
| Certifications | SIL capable, 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 |
| Power Source | Electric, Hydraulic, Pneumatic, Lever, Gear, Electro-Hydraulic |
| Pressure Class | ASME |
| Process Connection Type | Flanged, Single Flanged, Double Flanged, Lugged |
| Seat / Seal Type | Metal, Soft |
| Shutoff Class | Class IV (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 |
| Valve Size Standard | NPS |
| Other Configurations | Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product. |
Features
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The Fisher 8590 high-performance butterfly valve offers three connection options – splined, square, or keyed shaft – providing flexible compatibility with various actuators to meet different installation requirements.
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Its innovative pressure-assisted seal design ensures tight shut-off while allowing the use of smaller, more economical actuators, fully compliant with ASME B16.34 shut-off standards.
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The optional ENVIRO-SEAL packing system features precision-polished stems and live-loading technology, significantly enhancing sealing performance and operational stability.
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For demanding applications, the valve can be equipped with corrosion-resistant trim and bolting materials, making it particularly suitable for harsh environments including sour service conditions.
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During installation, the valve body self-centers on pipeline flange bolts, greatly simplifying the installation process while ensuring precise alignment.
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The carefully engineered sealing design positions retainer screws away from sealing surfaces, completely eliminating potential interference with sealing performance.
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Notably, the valve features balanced bi-directional torque characteristics – maintaining consistent opening/closing torque regardless of pressure direction – greatly simplifying actuator selection and system design, making it an ideal choice for critical applications.
INSTRUBESTproudly offers the Fisher 8590 High Performance Butterfly Valve – a premium solution that delivers exceptional value without compromise. Our valves combine Fisher’s renowned quality with competitive pricing, ensuring you get industry-leading performance at cost-effective rates. We maintain ready stock of standard configurations for fast delivery, while our technical team provides personalized support to help select the perfect valve for your specific application. What truly sets us apart is our commitment to after-sales service – from installation guidance to maintenance support, our experts are always available to keep your operations running smoothly. With JCSCMRO, you’re not just buying a valve; you’re investing in a long-term partnership built on reliability, efficiency and trust.

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