Fisher 8590 Butterfly Valve – Rotary Valves

Fisher 8590 Valve is a high performance butterfly valve that can maintain tight shutoff for use under extreme pressure and temperature conditions.

The splined shaft of the Fisher 8590 combines with a variety of spring-and-diaphragm or pneumatic piston actuators to make the 8590 a reliable, high-performance butterfly valve for a variety of throttling and on-off applications in the various process industries.

The 8590 valve can be supplied with one of several dynamic seals that can be used in a variety of demanding applications.

Fisher 8590 Valve Butterfly Valve – Product Features

• ​Shaft Versatility – this valve will meet your actuator needs with a choice of splined, square, or keyed shaft connections
• Excellent Shutoff Integrity – the pressure-assisted seal design provides tight shutoff and permits the use of smaller., less expensive actuators in applications requiring full ASME B16.34 shutoff capbilities
• Excellent Emissions Capabilities – optional ENVIRO-SEAL  packing systems are designed with very smooth shaft surfaces and live-loading to provide improved sealing, guiding, and loading force transmission. The seal of the ENVIRO-SEAL system can control emissions to below 100 ppm (parts per million)
• Sour Service Capability – trim and bolting materials are available for applications involving sour liquids and gases. These constructions comply with NACE M0175-2002, MR0175-2003, MR0103, and MR0175 / ISO 15156
• Easy Installation – the valve body self-centers on the line flange bolts as a fast, accurate means of centering the valve in the pipeline
• Reliable Flange Gasketing Surface – seal retainer screws are located so there is no interference with the sealing function of either flat sheet or spiral wound line flange gaskets.
• True Bidirectional Shutoff Performance – a feature of the valve design is that the torque necessary to open and close the valves is the same regardless of the direction in which the differential pressure is applied

FISHER 8590 VALVE BUTTERFLY VALVE

PRODUCT Specification

Specifications	ASME
Valve Body Size	NPS 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24
Pressure Rating	CL600 per ASME B16.34
Valve Body Materials	WCC or CF8M (std)
	LCC, CD3MN, M35-2, and CW2M
Disk Materials	CF8M (std), CD3MN, M35-2, and CW2M
Disk Edge Coating	Chrome Plate (std) Chrome Coat Chromium Carbide Coating
End Connections	Mates with RF Flanges per ASME B16.5 Optional construction mates with RTJ Flanges per ASME B16.5
Valve Body Style	Lugged (Single Flange) or Lugged with drilled through flange holes
Face-to-Face Dimensions	Meets MSS SP68, API 609, ASME B16.10, and EN 558 standards
Shutoff	Soft Seal: Class VI
	Metal Seal: Class IV, reverse direction only
	Phoenix III Seal: Class VI; reverse direction preferred, forward direction optional
	High Pressure Seal: Class VI, reverse direction only
Flow Direction	Standard (reverse flow) is with the flow into the shaft side of the disk
Flow Characteristic	Linear
Disk Rotation	Clockwise (CW) to close

FISHER 8590 VALVE BUTTERFLY VALVE Dimensions & Weights

Valve Size	A	E	F	G	K	R	S(1)	T	U	Y(2)	W(2)	Approximate Weight
	mm											kg
NPS 3	52	187	198	98	123	127	15.9	117	–	3/4-10	1/2-13	10.8
NPS 4	62	214	259	128	150	157	19.1	152	32	7/8-9	1/2-13	21.6
NPS 6	76	208	333	166	220	216	31.8	235	46	1-8	5/8-11	45.5
NPS 8	102	208	407	241	234	270	38.1	235	46	1-1/8-8	5/8-11	80.2
NPS 10	116	356	506	312	302	324	44.5	273	51	1-1/4-8	3/4-10	157
NPS 12	140	356	553	339	332	381	50.8	273	51	1-3/8-8	3/4-10	213
NPS 14	157	356	597	370	348	413	63.5	337	76	1-1/2-8	7/8-9	281
NPS 16	178	356	678	408	386	470	63.5	337	76	1-5/8-8	7/8-9	395
NPS 18	198	508	735	451	427	533	76.2	533	127	1-5/8-8	1-1/4-8	563
NPS 20	216	508	807	478	446	584	76.2	533	127	1-5/8-8	1-1/4-8	721
NPS 24	230	508	933	544	413	692	76.2	533	127	1-7/8-8	1-1/4-8	1000

See how Fisher Control Valves provide safe, efficient and intuitive flow control.

Installing Fisher 8590 Butterfly Valve

Fisher 8590 butterfly valves should be installed with the shaft horizontal in a normal flow direction – horizontal installation will enhance valve performance as process fluids will sweep entrained solids from valve surfaces preventing particle build-up on the valve seals.

➡ Did you know? Fisher was founded  in 1880 by William Fisher. Today Fisher valves are used throughout oil and gas, petrochemical, refining, power and paper industries – the company is now a subsidiary of the Emerson process industrial group. 

Data Sheets

• Fisher 8590 Valve Butterfly Valve – Rotary Valves – Data Sheet
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