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જુલાઈ . 29, 2025 20:00 Back to list

High-Quality 2 Inch Butterfly Valve for Precise Flow Control



As one of the essential components in modern fluid control systems, the 2 inch butterfly valve has witnessed significant technological evolutions, extensive cross-sector deployments, and ever-higher compliance standards in recent years. This in-depth analysis will address the market trends, technical parameters, manufacturing process, and application cases surrounding the 2 in butterfly valve alongside comprehensive industry data and authoritative product comparisons.

1. Industry Trends: The Evolving Landscape of 2 inch butterfly valve
  • Global Market Size: According to MarketsandMarkets, the industrial valves market is estimated to exceed $85 billion by 2028 (Source), with butterfly valves occupying a ~22% share.
  • Application Expansion: Usage is intensifying in power, oil & gas, water treatment, and chemical processing, driven by increasing automation and demand for anti-corrosive solutions.
  • Customization Surge: China, as the global manufacturing hub, especially demonstrated a steep increase in OEM/ODM demands for 18 inch butterfly valve and 16 inch butterfly valve products to fit various industry-specific requirements.
  • Certifications as Differentiators: Valves compliant with API, ISO, and ANSI standards now dominate tendering and procurement processes worldwide.
  • Sustainability & Digitalization: Extended service life, energy efficiency, and integrated sensor feedback (e.g., for predictive maintenance) are becoming critical purchasing factors.
Figure 1: Market Growth Trend of 2 inch butterfly valve (2017-2023, million units)
2. Technical Parameters: 2 inch butterfly valve & Related Sizes
Specification 2 inch butterfly valve 16 inch butterfly valve 18 inch butterfly valve
Nominal Diameter (DN) 50 mm (2") 400 mm (16") 450 mm (18")
Standard Interface ANSI 150#/PN16 ANSI 150#/PN10/16 ANSI 150#/PN10/16
Pressure Rating 10-16 bar 10-16 bar 10-16 bar
Material Options Carbon Steel, Stainless Steel, Ductile Iron Stainless Steel, Carbon Steel, Epoxy Coated Iron Stainless Steel, Carbon Steel, Epoxy Coated Iron
Disc Material SS 304/316, Nickel-plated Ductile Iron SS 304/316, Duplex SS 304/316, Nickel-plated Iron
Seat Material EPDM, NBR, PTFE EPDM, NBR, PTFE EPDM, NBR, PTFE
Temperature Range -20°C to 120°C -10°C to 120°C -10°C to 120°C
Typical Media Water, Oil, Air, Slurry Water, Wastewater, Gas Water, Wastewater, Gas
Control Option Manual, Electric, Pneumatic Manual, Electric, Pneumatic Manual, Electric, Pneumatic
Test Standards ISO 5752, EN 593, API 609 ISO 5752, API 609 ISO 5752, API 609
High-Quality 2 Inch Butterfly Valve for Precise Flow Control
2 inch butterfly valve: Compact design with advanced corrosion resistance
3. Product Spotlight: Series F101 U-Section Wafer Type Butterfly Valve

Series F101, a U-Section Wafer Type Butterfly Valve engineered by Hongda Valve, stands out in the category of 2 inch butterfly valve for its optimal material construction, advanced manufacturing, and industry-leading compliance.
Discover details at: Product Page

  • Body Material: High tensile ductile iron/CF8M stainless steel for extended anti-corrosion and mechanical strength
  • Disc: Investment cast 316 stainless steel (or coated iron) for chemical resistance
  • Seat: Replaceable EPDM/NBR/PTFE; compliant with FDA and WRAS water standards
  • Design Standards: Fully conforms to API 609, ISO 5752, ANSI B16.1
  • Testing: Each product tested under hydrostatic and pneumatic methods as per international standards
  • Lifespan: Field data demonstrates a service life exceeding 50,000 cycles
  • Industry Applications: Petrochemical, metallurgy, municipal water supply, HVAC, and marine engineering
High-Quality 2 Inch Butterfly Valve for Precise Flow Control
18 inch butterfly valve production sample (custom order for China’s South-to-North Water Transfer Project)
4. Manufacturing Process of 2 inch butterfly valve
Step 1: Raw Material Inspection
Checking chemical composition of ductile iron bars and stainless steel (ISO 9001 record).
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Step 2: Casting & Forging
Precision sand/precision castings for body and disc, CNC-forging (API 609 class compliance).
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Step 3: CNC Machining
Latest CNC centres ensure bore tolerance and flatness, surface roughness ≤ Ra 1.6μm.
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Step 4: Seat & Stem Assembly
Elastomer seat molded (Vulcanization, 200°C), stem precision-fitted, anti-blowout design.
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Step 5: Surface Coating & Finish
Epoxy powder coating (≥250μm), corrosion test, color coding as per client/ISO 12944.
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Step 6: Pressure Testing
100% hydrostatic seat & shell test, bubble-tight closure as per ISO 5208/API 598.
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Step 7: Final Inspection & Packing
Visual, dimensional, serial code marking, anti-corrosive packaging, 3rd-party witness optional.
High-Quality 2 Inch Butterfly Valve for Precise Flow Control
18 butterfly valve (pre-delivery batch test – customer’s power station project)
5. Series F101 U-Section Wafer Type Butterfly Valve: Technical Data Visualization
Comparison of body strength, pressure, expected cycles, and weight across key sizes: F101 Wafer Type Butterfly Valve
Ductile iron remains the dominant body material, but upgrades to stainless steel are requested in harsh mediums.
6. Advantages and Customization Capabilities 2 inch butterfly valve
  • Wide range of actuator options (manual lever, gear, pneumatic, electric) for automation-grade plants.
  • Zero Leakage Seat: Advanced elastomer design guarantees ≤10-6cc leak rate after 10,000 cycles (ISO 5208 class A).
  • High compatibility with international flanges: ANSI, DIN, JIS, BS — ideal for cross-border engineering.
  • Choice of FDA-compliant seat for drinking water, food, and pharma application.
  • Fast lead time: Standard 2"-12" sizes 3-7 days, custom 16", 18" options 21-35 days due to forging & alloy prep.
  • Direct OEM/ODM engineering for complex environments – seawater, high chlorides, slurries.
7. Authority & Accreditations
  • Certification: API 609, ISO 9001:2015, WRAS potable water certified, CE marked for EU supply.
  • Referenced by: China South-to-North Water Transfer Project, SINOPEC, Danfoss, and regional water boards.
  • 3rd-Party Inspection: Intertek, SGS, Lloyd’s Register inspection available.
  • Service Guarantee: Up to 36 months warranty, 10-year parts availability, rapid after-sales support (Service Policy).
8. Typical Application Scenarios & Case Studies
1) Petrochemical: 2 inch butterfly valve used in automated tank farm pipeline switching; chemical-grade PTFE seat resists acids/bases.
2) Metallurgy Plant: F101 valves control cooling water and recycling lines; Stainless steel disc ensures non-magnetic interference and corrosion protection.
3) Wastewater Treatment: Municipal project in Suzhou, China – 16 inch butterfly valve batch supplied for sludge/clarifier zone, 20-year service records without seat leakage.
4) Power Generation: 18 butterfly valve units deployed for condenser water isolation in 2x540MW power station; verified for 50,000 open-close cycles with zero failure (test log#2023ZJD-0095).
5) Food & Beverage: Nickel-plated disc and FDA-compliant seats supply Coca-Cola bottling lines (3rd-party audit: SGS/WRAS).
9. Product FAQ: Professional FAQ
Q1: What materials are most commonly used in 2 inch butterfly valve construction?
A1: The primary materials include ductile iron (for body), stainless steel 304/316 (for disc), EPDM/NBR/PTFE (for seat), and stainless steel 420 for stem. Ductile iron offers excellent toughness, while PTFE and EPDM guarantee chemical compatibility and long service.
Q2: What are the critical standards for the 2 in butterfly valve?
A2: API 609 and ISO 5752 are the principal design and face-to-face standards; ISO 5208 and API 598 define seat and shell pressure tests; ANSI B16.1/EN 1092-2 for flange compatibility.
Q3: What is the typical flow coefficient (Cv) for a 2 inch butterfly valve?
A3: Cv generally ranges from 60 to 68 for a standard wafer type 2" valve, depending on body, disc geometry, and seat tightness. This allows for precise sizing in fluid engineering calculations.
Q4: Are custom alloys or coatings available (e.g., for seawater)?
A4: Yes, options include duplex stainless, super duplex, and Halar/Rilsan coatings for high chloride/abrasive applications. These customizations follow NACE MR0175/ISO 15156 if sour service is involved.
Q5: What are torque requirements for automated operation?
A5: For a 2" valve (EPDM seat, water service), the required starting torque is typically 6~10 Nm. For larger sizes or viscous mediums, torque increases, and optional gearboxes or pneumatic actuators are selected based on calculations.
Q6: What installation positions are recommended?
A6: Horizontal mounting is preferred (ensuring stem is parallel to ground), but vertical installations are possible if required. Wafer-type installation is quick, but operator access should be allowed post-installation for maintenance.
Q7: How is the product certified before shipment?
A7: Each valve undergoes hydrostatic seat and shell tests (per ISO 5208), visual/dimensional inspections, and serial traceability. Optional third-party inspection/reporting by Intertek/SGS/Lloyd’s can be provided per client tender.
10. Delivery, Warranty & Customer Support
  • Standard Lead Time: 3-7 days (2"-12"), 21-35 days (customized 16"/18")
  • Warranty: 36 months from date of dispatch; up to 10-year service parts support; warranty covers seat leakage, casting, operation failure.
  • Documentation: All valves supplied with MTR (Material Test Report), pressure test certificate, and trace code.
  • Customer Support: 24/7 engineering team consultation; remote and on-site commissioning on request. Dedicated online support: Contact Us
11. Conclusion & References

The 2 inch butterfly valve stands at the forefront of modern pipeline control, thanks to advancements in material science, manufacturing standards, and end-user customization. The Series F101 U-Section Wafer Type Butterfly Valve exemplifies the pinnacle of quality, reliability, and field versatility.
For ongoing research and professional community insights on butterfly valve development, see:

For more details or custom technical support, visit hongdavalve.com.

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