Double Offset Butterfly Valves

China Double Offset Butterfly Valve, Double Offset Butterfly Valve Manufacturer

TianYu valves As a Professional Double Offset Butterfly Valve Manufacturer in China, We Specialize in Delivering Butterfly Valves Designed for Precision and Reliability.

With our state-of-the-art facilities and skilled workforce, we’re able to deliver top-quality double offset butterfly valves as one of the leading manufacturers in China.
Design Standards: API 609 Cat B
Size Range: 2 – 72 Inch
Pressure Range: Class 150-300 LB
End Connections: Wafer, Lug, Flanged (FF, RF, RTJ)
Material Types: Carbon Steel, Stainless Steel, Duplex Steel, Al-BRZ, Alloy, Ti
Seat Type: PTFE, RPTFE, PPL (for higher temperature), RPTFE+Metal (Fire Safe)
Top Mounting: ISO 5211 top mounting is available
Operation Types: Lever, Gear, Pneumatic Actuator
Bosseal Valve advantages: 0 Leakage, low Torque, Long working life, Low Emission, Bi-direction and fire safe

DN150 CF8M Wafer Double Eccentric High-Temp Metal Hard Sealed Butterfly Valve

TIANYU wafer butterfly valve: DN50~DN600, PN16~PN40, -40~400℃, double eccentric, metal seal. Ideal for industrial heating, chemical, power sectors. Handles gas, oil, steam. Compact, low torque, durable. Customizable size, material, actuation for specific high-temp needs.

Double Flange Double Eccentric Butterfly Valve Manual Large Size 2-Way Soft Seal Butterfly Valve

TIANYU deeply integrates the precise regulation of Double Flange Double Eccentric Butterfly Valve technology, adaptability of diversified materials, and customized services, striving to become a technical benchmark in double flange butterfly valves and assisting customers in achieving safe, efficient, and sustainable pipeline operations.

Telescopic Double Eccentric butterfly Valve Bidirectional Sealing Metal 4 Inch Double Offset butterfly Valve

TIANYU Telescopic Double Eccentric butterfly Valve transforms thermal stress challenges into controlled variables—where every high-energy fluid stream is mastered with geometric precision and metallurgical excellence.

DN500 Pneumatic Motorized Double Eccentric butterfly Valve Pn16 High-Performance Double-Offset Butterfly Valve

TIANYU deeply integrates the precise regulation of High-Performance Double-Offset Butterfly Valve technology, adaptability of diversified materials, and customized services, striving to become a value benchmark in the global industrial valve sector and assisting customers in achieving safe, energy-efficient, and sustainable pipeline operations.

Double Acting Double Eccentric Pneumatic butterfly Valve for Steam Pipe and Steam Pipe in Valve

Ductile Iron/Cast Steel Electric Flanged Double Eccentric Soft Seal Butterfly Valve

TIANYU deeply integrates the efficient sealing of Electric Flanged Double Eccentric Soft Seal Butterfly Valve technology, material adaptability, and customized services, striving to become a leading brand in mid-to-high-end gate valves and assisting customers

Double Offset Butterfly Valves

Double Flanged Butterfly Valves are ideal for mounting between flanges, widely used in water treatment, powerplants, dams, and other sectors. They offer pneumatic, electric, manual, or hydraulic operations, functioning as taps, stoppers, or to control fluid flow. Their threaded holes enable easy installation and uninstallation in pipelines.

Available in Standard Double Flanged Butterfly Valves & Custom orders & Custom valve assemblies
Factory Direct Prices & quality warranty.

Technical Specifications and Design Compliance of Double Offset Butterfly Valves

Double offset butterfly valves feature a dual-eccentric design where the stem axis is offset from both the disc sealing surface and pipeline centerline. They achieve high-efficiency sealing via metal-elastic composite or full-metal seals, suitable for medium-temperature/pressure applications (e.g., chemical, metallurgy, energy industries).

Double Offset Butterfly Valves Key Specifications:

Pressure-Temperature: PN16-PN100 (Class 150-Class 600), -40°C~450°C (metal seals up to 550°C).
Materials:
- Body: Ductile iron, WCB carbon steel, 316 stainless steel, duplex steel (2205);
- Disc: Hardened stainless steel or Stellite alloy surfacing;
- Seals: EPDM/NBR (soft) or graphite-metal alloy (hard).
Connections: Wafer, flanged (RF/RTJ), welded, compliant with ASME B16.5/EN 1092.
Actuation: Manual, electric, pneumatic (explosion-proof optional), 30% lower torque than centerline valves.

Double Offset Butterfly Valves Design Compliance:

Standards: API 609, ISO 5208 (Class A leakage), NACE MR0175 (corrosion resistance), API 607 (fire-safe for high-temperature models).
Testing: 1.5x hydrostatic test (ASME B16.34), ≤0.1% leakage in air tests, 100,000-cycle life test with ≤0.1mm wear.

Double Offset Butterfly Valves Applications:

Chemical reactor control (corrosive media);
Metallurgical flue gas pipelines (high-temperature metal seals);
Heating networks (water hammer reduction via offset design).

Advantages: Reduced friction from eccentric structure extends seal life, combining low leakage of soft seals with high-temperature resistance of hard seals for complex Working condition.

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BEST QUALITY DOUBLE OFFSET BUTTERFLY VALVES FOR YOU

A double offset butterfly valve is widely used in the pipeline for isolation and regulating applications, especially where request frequent open/close.
If you need any support with our Ball Valves, pls contact us!

Double Offset Butterfly Valves Parts

Sealing Element

The sealing element is vital for valves, preventing media leakage when closed. Made of durable, corrosion-resistant materials, it withstands pressure, temperature, and corrosion. Its repeated friction during operation makes material choice and manufacturing quality crucial for sealing performance and valve lifespan, regardless of valve type.

Valve Stem

The valve stem links the closure element to the operating mechanism, controlling its movement to regulate media flow. It requires strength and rigidity to withstand forces while maintaining stability. Its design and quality directly impact the valve’s flexibility and durability.

Valve Body

The valve body serves as the core structure of the valve, forming the main framework that provides installation and support for other components. It houses the internal channels for media flow. Whether it’s a ball valve, butterfly valve, or gate valve, the valve body is the most essential part, directly influencing the valve’s performance, flow characteristics, and service life.

Valve Cover

The valve cover is the enclosed part of the valve, typically connected to the valve body to form a sealed space within the valve. Its main function is to protect the internal components of the valve from external impurities and ensure complete sealing when the valve is closed, preventing media leakage. The design and manufacturing quality of the valve cover significantly impact the overall performance of the valve.

Why Choose Us

Ensure Safety

Our products and services comply with international standards and specifications to make sure that we only produce the best and highest quality products and services to our clients.

Customization Service

We offer tailor-made industrial valves to ensure that our product fits your application standards and demand. TIANYU is ISO, API, MSS, and ASME compliant to guarantee you the highest product quality.

Fast Shipping

As a business partner, TIANYU makes sure that we commit to our clients’ requested deadline because we very much understand the importance of adhering to the timeline required.

After-Sales Service

TIANYU’s service does not end once our industrial ball valves are being delivered. Also, we offer warranties and provide customer service to our clients as part of our quality service.

Tianyu Professional China Valve Manufacturers and Supplier Conforming ISO APl CE certification standards

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About Us

Founded in 2009, Wenzhou Tianyu Valve Technology Co., Ltd. is a professional valve enterprise integrating design, development, production, and sales services, located in the hometown of Chinese valves – Oubei Town, Wenzhou.

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Add: No. 6988 Sunshine Avenue, Wuxing Industrial Zone, Oubei Town, Yongjia County, Wenzhou City, Zhejiang Province
Phone: +0086-0577-67091625
Email: info@tyfluidgroup.com
WhatsApp: +0086 150 8859 0029

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