Butterfly Valve
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Built for demanding high-pressure, high-temperature, and severe service applications, the Butt Weld Triple Offset Butterfly Valve is designed to provide reliable isolation, tight shut-off, and long-term operating performance. Its triple-offset geometry eliminates rubbing between the sealing surfaces during normal operation, significantly reducing wear and operating torque. The butt-weld end connection provides a continuous and robust pipeline connection, enhancing structural integrity and reducing potential external leakage paths.
The Butt Weld Triple Offset Butterfly Valve is well suited for critical applications in oil & gas, petrochemical, refinery, chemical processing, power generation, and high-temperature steam systems. Its metal-seated design, zero-leakage shut-off capability, and durable construction make it an ideal choice for applications where conventional resilient-seated butterfly valves may not provide sufficient temperature, pressure, or service-life performance.
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Product description: |
Butt Weld Triple offset Butterfly Valve |
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Model: |
D363Y/D363/D943Y/D963Y |
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Nominal diameter: |
NPS 2”～48” |
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Operating temperature: |
-196℃～593℃ |
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Operating pressure: |
CLASS 150～2500 |
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Material: |
A216 WCB/WCC；A217 WC6/WC9/C5/C12/C12A/CA15；A351 CF8/CF8M/CF3/CF3M/CF8C/CN3MN/CK3MCUN/CN7M； A352 LCB/LCC；A494 CW-6MC/CU5MCuC/M35-1；A890 4A(CD3MN)/5A(CE3MN)/6A(CD3MWCuN) etc. |
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Design standard: |
API 609、ASME B16.34 |
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Structural length: |
ASME B16.10 |
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Connecting end: |
ASME B16.5、ASME B16.47、ASME B16.25 |
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Test standard: |
API 598、ISO 5208 |
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Operation method: |
LEVER/WORM GEAR/MOV/PNEUMATIC |
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Application fields: |
WATER PLANT/POWER PLANT/STEEL SMELT PLANT/CHEMICAL PLANT/SEWAGE TREATMENT/ENVIRONMENTAL PROTECTION SYSTEM/ |
Compact and cost-effective solution for reliable isolation and flow control in industrial piping systems.
Triple Offset Design
The three-offset geometry eliminates rubbing between the disc and seat during operation, reducing wear and extending sealing surface life.
Metal-Seated Construction
Robust metal sealing surfaces provide excellent resistance to high temperatures, pressure, abrasion, and demanding process conditions.
Zero-Leakage Shut-Off
Torque-seated metal sealing provides reliable and tight shut-off for critical isolation applications when designed and tested to applicable standards.
Butt Weld Ends
Direct welding to the pipeline provides a strong, continuous connection and minimizes potential external leakage paths.
High Temperature Capability
Suitable for high-temperature media such as steam, hot gas, and other demanding process fluids where soft-seat materials may be unsuitable.
Low Operating Torque
The non-rubbing sealing mechanism reduces friction during operation, helping lower operating torque and actuator requirements.
Excellent Durability
Hardened and wear-resistant sealing surfaces provide long service life under frequent cycling and severe operating conditions.
High Structural Integrity
Welded pipeline connections provide excellent resistance to vibration, thermal expansion, and pipeline stresses.
Fire Safe Design
Metal sealing components provide enhanced resistance to fire and high-temperature exposure, supporting safe operation in critical services when designed and tested to applicable standards.
Wide Range of Applications
Suitable for oil & gas pipelines, refineries, petrochemical plants, chemical processing, power generation, steam systems, and other high-temperature and severe service applications.
Chemical Industry
Ball valves, butterfly valves, gate valves, globe valves, check valves, and control valves ensure safe fluid isolation, precise process control, and reliable operation in demanding chemical processing applications.
Oil Industry
Engineered for reliable isolation, flow regulation, and backflow prevention, our valve solutions support upstream, midstream, and downstream oil production and refining operations.
Natural Gas
Providing leak-tight sealing, dependable flow control, and safe pipeline operation for natural gas transmission, storage, LNG, and distribution systems.
Metallurgy
Built to withstand high temperatures, abrasive media, and harsh operating conditions in steelmaking, smelting, and metallurgical processing.
Power Generation
Ensuring reliable isolation, accurate flow control, and long-term performance in steam, boiler, turbine, and power plant systems.
Pharmaceutical
Delivering hygienic, precise, and contamination-free flow control for pharmaceutical manufacturing and clean process applications.
Steel Industry
Designed for high-temperature, high-pressure, and severe-service conditions in iron making, steelmaking, rolling mills, and auxiliary process systems.
New Energy
Supporting hydrogen, LNG, carbon capture, battery materials, and renewable energy projects with advanced valve solutions for safe and efficient process control.
-196°C Cryogenic Liquid Nitrogen Test System
Simulates ultra-low-temperature operating conditions to verify valve sealing performance and reliability for cryogenic applications.
Brinell, Rockwell & Vickers Hardness Tester
Ensures material hardness meets international standards for strength, durability, and long-term performance.
Large-Scale Coordinate Measuring Machine (CMM)
Provides high-precision dimensional inspection to ensure machining accuracy and product consistency.
Valve Life Cycle Testing System
Evaluates valve durability and operational reliability through repeated opening and closing cycle tests.
High & Low Temperature Test Chamber
Verifies valve performance and stability under extreme temperature conditions.
High Temperature Aging Test Chamber
Assesses long-term material stability and product reliability under continuous high-temperature exposure.
Desktop SPECTRO Optical Emission Spectrometer (Germany)
Performs rapid and accurate material composition analysis to ensure full material traceability and compliance.
Our engineering team evaluates these factors to ensure long-term reliability and regulatory compliance.
ISO9001:2015
ISO9001:2015
Environmental Management System Certification
Occupational Health & Safety Management System Certification
Certificate of Quality System Approval
ScheduleTo Certificate No HPiVS-iP1001-062-Q-10-00
CEPTUфNKAT COOTBETCTBNа
EAC
Certificate of Authority to use the Official APl Monogram
Certificate of Authority to use the Official APl Monogram
Certificate of Authority to use the Official APl Monogram
Certificate of Authority to use the Official APl Monogram
Certificate of Authority to use the Official APl Monogram
ISO 15848－1 QUALIFICATION CERTIFICATE
Test Report
Butterfly valves are used to isolate or regulate flow in pipelines. Their lightweight design and compact structure make them ideal for large-diameter piping systems.
Concentric butterfly valves are suitable for general service, double offset valves reduce seat wear for higher performance, and triple offset valves provide zero-leakage sealing for high-temperature and critical applications.
Butterfly valves are often preferred for large pipe sizes where space, weight, and cost are important considerations while still providing reliable isolation and flow control.
Q Can butterfly valves handle high-pressure applications?
Yes. High-performance and triple offset butterfly valves are specifically designed for high-pressure, high-temperature, and demanding industrial services.
Q Which industries commonly use butterfly valves?
Butterfly valves are widely used in water treatment, HVAC, chemical processing, power generation, marine, mining, and oil & gas industries.
Hangzhou Kaiwei Valve Group Co, Ltd, established in 2015, is a cutting-edgeindustrial enterprise that specializes in the R&D, design, casting, production,and sales of fluid control products and services
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