Compact Double Flanged Short Pattern Butterfly Valve | High Efficiency

I. Industry Trends: The Rise of Double Flanged Butterfly Valve Solutions

• Compactness, Reliability, and Versatility drive the surge in double flanged butterfly valve adoption across petrochemical, water treatment, marine, and metallurgical sectors. According to MarketsandMarkets, the global butterfly valve market is projected to reach USD 13.7 billion by 2027, with more than 32% CAGR attributed to double flanged configurations.
• 2021–2024 statistics indicate short pattern variants (short face-to-face) rise in preference due to limited installation space and cost optimization in new process plants.
• Double flange type butterfly valve ensures secure pipeline integration where high pressure or vibration is expected.

Industry reports underline an increased focus on ISO 5752 and API 609 compliance, especially within refineries and desalination plants.

II. Comprehensive Product Overview: Double Flanged Short Type Butterfly Valve

Product Name: Double Flanged Short Type Butterfly Valve
Product URL: https://www.hongdavalve.com/double-flanged-short-type-butterfly-valve.html

The double flanged short pattern butterfly valve distinguishes itself with a short face-to-face dimension for easy retrofitting and space optimization. Designed under rigorous ISO 5752 and ANSI/ASME B16.10 standards, its key advantages include maintenance ease, high torque transmission, and exceptional sealing – ideal for abrasive and corrosive flows.

• Face-to-face length conforming to ISO 5752 Series 13.
• Body: Ductile Iron, WCB, Stainless Steel (CF8/CF8M).
• Disc: Stainless steel/Aluminium bronze/Ni-plated ductile iron for anti-corrosion.
• Pressure rating: PN10/PN16/150lb.
• Size range: DN50–DN2000 (2"–80").
• Coating: Fusion bonded epoxy (minimum 200μm), suitable for potable water.
• Actuation: Manual (lever/gear), electric, pneumatic, or hydraulic.

Certifications & Standards: ISO 5752 / API 609 / ANSI B16.1 / EN 593 / WRAS for potable water use.
Lifespan: Typical service life of over 20 years, field-tested in desalination plants and steel mills.

III. Manufacturing Process Demystified: From Raw Casting to Final Testing

1. Raw Material Selection: Strictly opt for certified ductile iron, carbon steel, or stainless steel. Traceability per EN 10204 3.1/3.2 certificates.
2. Casting/Forging: Precision sand casting, lost wax or forging for robustness; advanced simulation minimizes shrinkage/porosity. Compliance: ISO 2531.
3. CNC Machining: Automated vertical lathes/machining centers attain tight tolerances (IT6–IT8), ensure coaxiality and compactness as required by ISO 5208.
4. Surface Treatment: Sand blasting for SA2.5 finish, corrosion-resistant coating (FBE or polyamide epoxy) certified to AWWA C550.
5. Assembly: Installation of precisely lapped disc, stem, and seat. ISO 5211 compliant for actuator interface.
6. Testing: Each valve is hydrostatically tested per API 598 / EN 12266; seat leakage rates A (bubble tight) or B.
7. Packing: Cleanroom packaging for potable water valves, VCI wrap for anti-corrosion shipment.

IV. Specification and Performance Data Visuals

V. Technical Advantages: Why Choose Butterfly Valve Double Flange?

• Superior Sealing: Dual O-ring stem and optional fire-safe seat for zero leakage (per EN 12266-1 Rate A).
• Anti-corrosion Longevity: Full-epoxy coated body and disc (min. 200μm FBE), proven to outperform zinc-rich paints by 4x in salt spray tests (ASTM B117).
• Rigid Structural Design: Dual flange distributes pipeline stress, mitigating flange-face damage during surge or vibration (essential for desalination and steel-making lines).
• Maintenance Excellence: Simple dismount/re-mount in-situ. Seat insert change without full body removal.
• Modularity: Ready for ISO 5211 direct-mount actuators—no extra brackets or couplings even for automation upgrades.
• Fire-safe & Anti-static Options: Available for critical oil & gas, refineries, and offshore platform use.

VI. Manufacturer Benchmarks: Double Flange Valve Suppliers Comparison

Hongda Valve is renowned for rapid project delivery, advanced ERP-backed traceability, and over 27 years of experience spanning power, metallurgy, municipal and chemical projects globally.

VII. Tailored Solutions: Custom-Built Butterfly Double Flange Valve

• Non-standard Face-to-Face Lengths for confined installations or line retrofits.
• Exotic Alloy Options: Duplex, Super Duplex & Alloy 20 for highly corrosive process lines.
• Flange Drilling Varieties: ASME, DIN, JIS, BS compatible to fit legacy or hybrid pipeline systems.
• Special Seat & Disc Coatings: PTFE, Halar for chemical resistance, Nickel plating for mining abrasive slurries.
• Automation Integration: Pre-tested with leading actuator brands (Rotork, Auma, Bernard) for remote control.
• Fire-safe & ATEX Compliance: For applications in hazardous areas per IECEx/ATEX zone standards.

VIII. Real-world Applications and Success Cases

• Petrochemical Refineries: Hundreds of double flanged short pattern butterfly valve units manage cooling water intake and chemical transfer lines, reducing leakage by 95% and maintenance by 30% as per site records (Valve World).
• Municipal Desalination Plants: 1200+ units of butterfly valve double flange type in operation at Sorek, Israel & Dubai Jebel Ali plants. ISO/NSF61 certified for potable water. Life-cycle: 15+ years under high TDS conditions.
• Steel Mills & Power Plants: DN200–1600 valves on process cooling circuits with custom stroke limiters. Cumulative downtime cut by 40% over 5 years.
• Marine Ballast: Type-tested to IMO standards. Over 650 installations globally, resistant to saline-induced corrosion (field salt spray test results: 1000+ hours).

IX. Professional FAQ

X. Delivery Cycle, Warranty & Customer Support

XI. Frequently Cited References & Industry Authority Links