Fisher 8590 High Performance Butterfly Valve
Key Product Features
1. High-Reliability Shutoff Seal
Pressure-assisted metal seal, concentric disc rotation, continuous sealing contact, Class VI shutoff performance.
2. Stable Mechanical Structure
Heavy-duty body design, splined / square / keyed shaft options, stable torque transmission.
3. Ultra-Low Emission Control
ENVIRO-SEAL® live-loading system, precision-machined shaft, emissions ≤ 100 ppm.
4. Corrosion-Resistant Alloy Material
Trim and fasteners constructed from high-grade corrosion-resistant alloy, H₂S-resistant structure.
Fisher 8590 Butterfly Valve – Technical Overview
|
Items |
Specification |
|
Valve Size Range |
NPS 3 – 24 |
|
Pressure Rating |
Class 600 (ASME B16.34) |
|
Body Materials |
WCC, CF8M (standard); optional: LCC, CD3MN, M35-2, CW2M |
|
Disc Materials |
CF8M (standard); optional: CD3MN, M35-2, CW2M |
|
Disc Edge Coating |
Chrome Plated (standard), Chrome Coat, Chromium Carbide |
|
End Connections |
RF flanges per ASME B16.5; optional RTJ per ASME B16.5 |
|
Body Style |
Lugged (single-flange) or lugged with through-drilled flange holes |
|
Face-to-Face Standards |
MSS SP-68, API 609, ASME B16.10, EN 558 |
|
Flow Characteristic |
Linear |
|
Disc Rotation |
Clockwise (CW) to close |
Shutoff Classes (by Seal Type)
|
Seal Type |
Shutoff Class / Direction |
|
Soft Seal |
Class VI |
|
Metal Seal |
Class IV (reverse direction only) |
|
Phoenix III Seal |
Class VI (reverse preferred) |
|
High-Pressure Seal |
Class VI (reverse direction only) |
Fisher 8590 Valve – Selection Notes
Pressure & Temperature: Suitable for high-pressure, high-temperature service up to Class 600
- Process Medium:
Clean media → Soft / Phoenix III seal
High temp or abrasive → Metal or high-pressure seal
Sour service → NACE-compliant materials
- Control Type: Linear throttling or tight on-off isolation
- Emissions Control: Optional ENVIRO-SEAL® packing (<100 ppm)
- Actuation: Splined, square, or keyed shaft for diaphragm or piston actuators
Company Strengths
- Genuine OEM: Emerson-certified, meeting international quality standards
- Fast Delivery: Minimize project delays with ready-to-ship stock
- Technical Support: Expert guidance for selection, installation, and maintenance
- Flexible Options: Multiple materials, seals, and connections to suit your process
- Warranty: 18-months coverage for peace of mind
FAQ
Q1: What actuator types can be used with the Fisher 8590 valve?
The valve supports multiple shaft connection designs (splined, square, or keyed), allowing compatibility with various pneumatic or electric actuators.
Q2: Can this valve be used in sour gas or sour liquid service?
Yes. Material options are available in compliance with NACE MR0175 / ISO 15156 and MR0103 standards.
Q3: What information is required to select the correct valve model?
Typical selection requires valve size, pressure class, connection type, sealing materials, and actuator type.
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