6″-600LB High Temp. Triple Offset Butterfly Valve

Valve Type Triple Offset Hard-Seated Butterfly Valve (with Cooling Fins)
Nominal Diameter (DN) DN50 ~ DN1200
Nominal Pressure (PN) PN10 ~ PN100 (or Class 150 ~ 600)
Applicable Medium Steam, High-temperature oil, High-temperature flue gas, Thermal fluid, etc.
Applicable Temperature With cooling fins: Up to 650°C
Connection Type Wafer type / Flanged / Butt-welded
Operation Type Handwheel with gearbox / Pneumatic / Electric / Electro-hydraulic
Function Mode On-Off / Control

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Description

High Temperature High Pressure Triple Offset Butterfly Valve Technical Data Sheet (with Cooling Fins)

Valve Basic Information

Item	Standard Parameter	Option / Fill-in Column
バルブタイプ	Triple Offset Hard-Seated Butterfly Valve (with Cooling Fins)	【】
Nominal Diameter (DN)	DN50 ~ DN1200	【】 mm
Nominal Pressure (PN)	PN10 ~ PN100 (or Class 150 ~ 600)	【】 MPa / 【】 Class
Applicable Medium	Steam, High-temperature oil, High-temperature flue gas, Thermal fluid, etc.	【】
Applicable Temperature	With cooling fins: Up to 650°C	Max. working temperature: 【】°C
Connection Type	Wafer type / Flanged / Butt-welded	【】
Operation Type	Handwheel with gearbox / Pneumatic / Electric / Electro-hydraulic	【】
Function Mode	On-Off / Control	【】

Design Codes and Standards

Item	Standard Adopted
Design & Manufacture	JB/T 8527, ANSI B16.34
Face-to-Face / End-to-End	GB/T 12221, ISO5752, ANSI B16.10
Flange Connection	JB/T 79.1, HG20592, ANSI B16.5, ANSI B16.47
Butt-welding Ends	GB/T 12224, ANSI B16.25
Pressure Test	GB/T 13927, API 598, ANSI B16.104

Structural Features and Design Parameters

Item	Technical Requirement	Confirmation
Design Principle	Triple offset (axial, radial, angular offset), ensuring zero friction during opening/closing	【Yes/No】
Cooling Fin Design	Cooling fins integrated into valve body neck or bonnet extension to block heat bridge, protect stuffing box and actuator	【Yes/No】
Sealing Class	Bidirectional zero leakage, ANSI Class VI (bubble-tight) or higher	【】
Flow Characteristic	Approximate equal percentage	【】
Rangeability	30:1 ~ 100:1	【】
Stem Sealing	Flexible graphite packing, extended stuffing box + cooling fins, self-sealing gland, anti-blowout design	【High-temp专用】
Fire-safe Design	Optional, meeting API 607 / 6FA	【Yes/No】

Main Component Materials

Part Name	Standard Material	Optional Material (depending on service)	Selection
体	WCB (Carbon Steel)	WC9 (Cr-Mo Steel, high temp), CF8 (304), CF8M (316)	【】
ディスク	WCB / Carbon Steel	304, 316, Alloy Steel (high-temp grade)	【】
幹	2Cr13	17-4PH, Inconel (high-temp high-strength), 304, 316	【】
Seat / Disc Seal Face	Multi-layer metal seal (304+graphite)	Full hardfacing (Stellite, wear & erosion resistant)	【】
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 / Stainless Steel	Same as body material	【】

Dimensions and Connections (Unit: mm)

Note: Cooling fin structure increases overall valve height; to be confirmed by manufacturer.

DN	Face-to-Face L (Wafer/Flanged)	Height H (incl. cooling fins & support)	Flange Bolt Circle D1	No. of Bolt Holes – Dia.
100	190	【Height with fins】	【Fill in】	【Fill in】
150	210	【Height with fins】	【Fill in】	【Fill in】
200	230	【Height with fins】	【Fill in】	【Fill in】
250	250	【Height with fins】	【Fill in】	【Fill in】
300	270	【Height with fins】	【Fill in】	【Fill in】

Actuator Parameters (for automated valves)

Item	Pneumatic Actuator	Electric Actuator
Model	【e.g., AW series / Cylinder type】	【e.g., ZDT9 series】
Action Type	Double-acting / Single-acting (spring return)	On-Off / Modulating
Air Supply Pressure	0.4 ~ 0.7 MPa	—
Power Supply	—	220V AC / 380V AC / Other
Accessories Required	Solenoid valve, limit switch, positioner, filter regulator	Torque limiter, heater, local control station
Connection to Valve	Via extended yoke with cooling fins to protect actuator from high temperature	Via extended yoke with cooling fins to protect actuator from high temperature

Testing and Inspection

Shell Test: 1.5 × Rated Pressure (MPa)
Seal Test: 1.1 × Rated Pressure (MPa)
Air Tightness Test: 0.6 MPa (if required)

Remarks / Special Requirements

(e.g., Oil-free treatment, degreasing, low-temperature impact test requirements, heat tracing interface, etc.)

Cooling Fin Configuration Requirements (New)

Item	Standard / Requirement	Confirmation
Cooling Fin Arrangement	□ Integral fins on valve body neck □ Extended bonnet with fins □ Extended stuffing box with fins	【】
Technical Requirement	Cooling fins shall effectively block heat transfer to actuator, ensure stuffing box temperature ≤【】°C, actuator ambient temperature ≤【】°C	【】
Cooling Fin Material	Same as body material or better heat-resistant steel	【】
Cooling Effect Verification	Manufacturer to provide heat transfer calculation or application reference under similar conditions	【Yes/No】
Optional Cooling Method	□ Natural convection (fins) □ Forced cooling (water/air cooling jacket, for ultra-high temp)	【】

Supplementary Selection Notes (with Cooling Fins):

When cooling fins are necessary: When medium temperature exceeds 200°C, it is recommended to consider cooling fins or an extended yoke. When temperature exceeds 400°C, an extended bonnet with cooling fins or a finned yoke is mandatory; otherwise, high temperature conducted through the stem can damage the packing and actuator electronics (e.g., positioner, motor) .
Cooling fin effect: By increasing the exposed surface area and lengthening the heat conduction path (heat bridge interruption), cooling fins effectively reduce the temperature at the bottom of the stuffing box, keeping it within the allowable range for flexible graphite or other packing materials .
Ultra-high temperature special treatment: If the temperature exceeds 650°C or the medium is highly corrosive, in addition to cooling fins, considerations may include water-cooled disc or refractory lining. This requires separate confirmation with the manufacturer .

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