Triple Offset Butterfly Valve – High Temperature / High Pressure

Pressure Rating Class 600LB (PN100)
Design Standard API 609 (Category B), ASME B16.34, BS EN 593
Face-to-Face Dimensions API 609 / ASME B16.10 / ISO 5752 Series 13 & 20
Flange Connection ASME B16.5 (RF or RTJ)
End Connections Double flanged (long pattern)
Top Flange ISO 5211

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Triple Offset Butterfly Valve – High Temperature / High Pressure Ready for Actuators

TECHNICAL DATA SHEET

Triple Offset Butterfly Valve – High Temperature / High Pressure

24″ (DN600) · Class 600LB · Double Flanged · With Thermal Fins

PRODUCT DESCRIPTION

The Triple Offset Butterfly Valve is a high-performance metal-seated quarter-turn valve engineered for demanding high-temperature and high-pressure service conditions where conventional soft-seated valves cannot perform reliably. Featuring a triple offset (axial, radial, and angular) design geometry, this valve ensures zero friction between the disc and seat during opening and closing, with sealing engagement occurring only at the final point of closure. This unique design eliminates galling and scratching of sealing surfaces, delivering extended service life, low operating torque, and bubble-tight bidirectional shut-off even under extreme thermal cycling.

This 24-inch (DN600) Class 600LB double-flanged configuration is specifically equipped with integral thermal cooling fins on the upper body neck / bonnet extension to dissipate heat and protect the stem packing, stuffing box, and actuator mounting area from excessive temperatures. The valve is ideally suited for steam isolation, high-temperature oil/gas, thermal fluid systems, and critical process services in power generation, petrochemical, and refinery applications.

FITUR DESAIN

Feature	Keterangan
Jenis Katup	Triple offset (triple eccentric) metal-seated butterfly valve
Offset Geometry	Three offsets: axial, radial, and angular (elliptical seat geometry) – ensures frictionless operation with sealing only at point of closure
Sealing Principle	Torque-seated metal-to-metal sealing; bidirectional zero leakage (ANSI Class VI bubble-tight)
Connection Type	Double flanged (long pattern) – ASME B16.5 / B16.47 compliant
Flow Direction	Fully bidirectional
Seat Design	Laminated metal seal (multi-layer 304 stainless steel + graphite) or full Stellite hardfacing
Stem Design	Anti-blowout stem with externally retained gland design per API 609 Category B
Stem Sealing	Flexible graphite packing in extended stuffing box, self-sealing gland, anti-blowout design
Actuator Mounting	ISO 5211 top mounting flange
Fire-safe	Inherently fire-safe design (metal-to-metal sealing); optional API 607 / 6FA certification
Maintenance	Adjustable stem packing with easy access without actuator removal

THERMAL COOLING FINS – KEY FEATURE

Feature	Keterangan
Desain	Cast or welded integral cooling fins on upper body neck / bonnet extension
Function	Block heat bridge; dissipate heat from line media before reaching packing and actuator
Bahan	Carbon steel or stainless steel (matching body material)
Benefit	Enables continuous operation at media temperatures up to 650°C (1200°F)while maintaining safe packing/actuator temperatures

TECHNICAL SPECIFICATIONS

4.1 General Parameters

Parameter	Spesifikasi
Ukuran	24 inches (DN600)
Peringkat Tekanan	Class 600LB (PN100)
Design Standard	API 609 (Category B), ASME B16.34, BS EN 593
Face-to-Face Dimensions	API 609 / ASME B16.10 / ISO 5752 Series 13 & 20
Flange Connection	ASME B16.5 (RF or RTJ)
End Connections	Double flanged (long pattern)
Top Flange	ISO 5211

4.2 Operating Conditions

Parameter	Spesifikasi
Maximum Working Pressure	10.0 MPa (100 bar) / Class 600
Maximum Media Temperature (with cooling fins)	Up to 650°C (1200°F)
Standard Temperature Range	-46°C to +425°C
Extended Temperature Range	Up to +538°C (with suitable materials); up to +700°C with special alloys
Applicable Media	Steam, high-temperature oil, high-temperature flue gas, thermal fluid, superheated water, process gases

MATERIAL SPECIFICATION

Komponen	Standard Material	Optional Materials
Tubuh	WCB (Carbon Steel, ASTM A216 Gr. WCB)	WC9 (Cr-Mo steel, high temp), CF8 (304 SS), CF8M (316 SS), LCB/LCC (low temp), Alloy 20, Duplex / Super Duplex
Cakram	WCB / Carbon Steel	304 SS, 316 SS, Alloy Steel (high-temp grade), Duplex SS
Stem / Shaft	2Cr13 Stainless Steel	17-4PH, Inconel (high-temp high-strength), 304 SS, 316 SS, XM-19
Seat / Seal Face	Multi-layer metal seal (304 SS + graphite)	Full Stellite hardfacing (wear & erosion resistant), Inconel overlay
Bushing / Bearing	Self-lubricating metal-graphite (high temp)	High-temp alloy + solid lubricant coating
Packing / Gasket	Flexible graphite (high temp)	Ceramic fiber + graphite combination (ultra-high temp)
Cooling Fin Material	Carbon steel (matching body)	Stainless steel
Bolting	Alloy steel / stainless steel	NACE MR 01-75 compliant

PERFORMANCE & TESTING

Test	Standar	Requirement
Body Shell Test	API 598	1.5 × rated pressure
Seat Leak Test	API 598 / ANSI/FCI 70-2	Bidirectional zero leakage; ANSI Class VI (bubble-tight)
Pressure-Temperature Rating	ASME B16.34	Per class rating chart
Fire-safe Test	API 607 / API 6FA (optional)	Inherently fire-safe (metal seat)
Fugitive Emissions	ISO 15848	< 50ppm
NACE Compliance	MR 01-75 / ISO 15156 (optional)	—
Flow Characteristic	Approximate equal percentage	—
Rangeability	30:1 to 100:1	—

DIMENSIONS (24″ – Class 600 – Double Flanged)

Dimensions are for reference. Consult factory for certified drawings.

Parameter	Value
Ukuran	24″ (DN600)
Face-to-Face (Long Pattern)	Per API 609 / ASME B16.10
Flange Standard	ASME B16.5 Class 600 RF / RTJ
Flange Bolt Circle	Per ASME B16.5
Number of Bolt Holes	Per ASME B16.5
Overall Height (incl. cooling fins)	To be confirmed by manufacturer
Approx. Weight	Consult manufacturer

Note: Cooling fin structure increases overall valve height significantly; confirm with manufacturer for specific project dimensions.

ACTUATION OPTIONS

Option	Details
Manual	Handwheel with worm gear operator
Pneumatic	Double-acting or spring-return
Electric	On-off or modulating
Electro-hydraulic	For high-torque requirements
Mounting	ISO 5211 top flange

APPLICATIONS

Power generation – steam isolation, turbine bypass, boiler feedwater
Petrochemical & refining – high-temperature hydrocarbon processing, catalyst regeneration
Oil & gas – pipeline manifolds, wellhead test separation, gas processing
Chemical processing – high-temperature corrosive media, thermal fluid systems
Metallurgy – smelting plants, high-temperature flue gas
District heating / cooling – steam and thermal fluid distribution
Cogeneration / CHP – heat recovery steam generator (HRSG) isolation

KEY ADVANTAGES

Advantage	Keterangan
Zero Friction Operation	Triple offset design eliminates seat rubbing; sealing only at point of closure
Extended Service Life	No galling or scratching of sealing surfaces; high cycle life
Bidirectional Shut-off	Fully bi-directional bubble-tight sealing
High Temperature Capability	Up to 650°C with cooling fins
Low Operating Torque	Reduced actuator size and energy consumption
Thermal Cycling Resistance	Continued seal integrity through thermal cycling
Inherently Fire-safe	Metal-to-metal sealing provides fire-safe design without additional soft seals
Fugitive Emission Control	< 50ppm; ISO 15848 compliant

OPTIONS & CUSTOMIZATIONS

Option	Details
Body Materials	WCB, WC6, WC9, CF8, CF8M, LCB, LCC, Duplex, Super Duplex, Inconel, Hastelloy
Seat Hardfacing	Stellite, Inconel, Colmonoy
End Connections	Double flanged (standard), butt-weld, lug, wafer
Tatap Muka	Short pattern or long pattern (gate valve replacement)
Actuator	Manual gear, pneumatic, electric, electro-hydraulic
Fire-safe Certification	API 607 / API 6FA
Fugitive Emission	ISO 15848 certified
NACE	MR 01-75 / ISO 15156 compliant materials
Special Cleaning	For oxygen service or ultra-pure applications

APPLICABLE STANDARDS

Standar	Keterangan
API 609	Butterfly Valves: Double-Flanged, Lug- and Wafer-Type (Category B)
ASME B16.34	Valves — Flanged, Threaded, and Welding End
ASME B16.10	Face-to-Face and End-to-End Dimensions
ASME B16.5	Pipe Flanges and Flanged Fittings (up to 24″)
ASME B16.47	Large Diameter Steel Flanges
API 598	Valve Inspection and Testing
ANSI/FCI 70-2	Control Valve Seat Leakage
ISO 5752	Face-to-Face Dimensions
BS EN 593	Industrial Valves — Butterfly Valves
API 607 / API 6FA	Fire-safe Testing (optional)
ISO 15848	Fugitive Emissions (optional)
NACE MR 01-75	Sulfide Stress Cracking Resistant Materials (optional)

This technical data sheet is for general reference only. Specifications are subject to change without prior notice. For specific project requirements, including certified dimensions, material certifications, and custom engineering, please consult the manufacturer.

JAMINAN:

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