Fisher 8590 High‑Performance Butterfly Valve | CL600 NPS3‑24

 

Fisher 8590 is a concentric disc high‑performance butterfly valve for process pipeline throttling and on‑off shutoff service. Size range NPS 3‑24, pressure class CL600 conforming to ASME B16.34. Splined / square / keyed shaft interfaces support manual, pneumatic and electric actuators. Seal and material options cover high pressure, high temperature and sour service conditions.

 

 

This valve targets modulating throttling and tight isolation duties. Body options:

 

• Lugged (single flange)
• Lugged with through‑drilled flange holes
• Double flanged, available on request

 

End connection: ASME B16.5 RF flange standard; RTJ flange optional. Face‑to‑face dimensions comply with MSS SP‑68, API 609, ASME B16.10 and EN 558.

 

Linear flow characteristic. Multiple seal sets:

 

• Soft seal for clean media, bi‑directional Class VI shutoff
• Phoenix III fire‑safe seal, Class VI
• Metal seal / High Pressure seal for high temp, abrasive service, Class IV / VI reverse flow only

 

NACE MR0175 / ISO 15156 material packages available for sour liquid & sour gas service.

 

 

 

Seal Type	Shutoff Class	Flow Direction	Typical Service
Soft Seal	Class VI	Bi‑directional	Clean process fluid
Metal Seal	Class IV	Reverse only	High temp / abrasive
Phoenix III Seal	Class VI	Reverse preferred, forward optional	Fire‑safe, clean to medium duty
High‑Pressure Seal	Class VI	Reverse only	High pressure / high temp

 

 

• Manual: handlever, handwheel / gear operator
• Pneumatic: diaphragm actuator, piston actuator
• Electric actuator for motorized on‑off / modulating service
• Compatible with Fisher DVC6200 digital positioner for automated control & diagnostics

 

Standard disc rotation: Clockwise to close (viewed from actuator side).

 

 

• Oil & gas processing
• Refinery and petrochemical
• High pressure process loops
• Sour service pipelines with NACE material
• Power generation, general process throttling & isolation

 

 

Item	Specification
Size Range	NPS 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24
Pressure Class	CL600, ASME B16.34
Body Material	Std WCC, CF8M; Optional LCC, CD3MN, M35-2, CW2M
Disc Material	Std CF8M; Optional CD3MN, M35-2, CW2M
Disc Edge Coating	Std Chrome Plate; Optional Chrome Coat, Chromium Carbide
Body Style	Lugged, through‑drilled lugged; Double flanged on request
End Flange	ASME B16.5 RF; RTJ optional
Face‑to‑Face	MSS SP68, API 609, ASME B16.10, EN 558
Flow Characteristic	Linear
Shaft Interface	Splined (std all sizes); Square NPS3‑12; Keyed NPS14‑24
Rotation	Clockwise to close
Packing	Standard PTFE / graphite; Optional ENVIRO‑SEAL <100 ppm
Compliance	API 609, API 607 (Phoenix III), NACE on request

 

 

1. Genuine Emerson Fisher valve supply for global projects
2. Sea / air / express shipping options
3. Engineering support: model selection, configuration review, installation guidance
4. Datasheets, CAD drawings and project documentation available

 

Warranty terms defined on sales contract.

 

 

Q1: What actuators fit Fisher 8590?

Splined / square / keyed shaft support most pneumatic diaphragm, piston, manual gear and electric actuators. Compatible with DVC6200 positioner.

 

Q2: Can Fisher 8590 be used for sour service?

Yes. Specify NACE MR0175 / ISO 15156 compliant trim, fastener and material package at quotation.

 

Q3: What details are needed for quotation?

Size NPS, pressure class, body style, flange type, seal selection, material spec and actuator / positioner requirement.

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