1.Comprehensive Technical Specifications
Component & System Parameter | Standard Industrial Specification & Field Options |
|---|
Brand / Manufacturer | SDF |
Valve Classification | Butterfly Valve / Flanged Butterfly Valve (Automated) |
Actuation Architecture | High-Torque Pneumatic Actuator (Optional Electric Actuation) |
Design Standards | API 609, ASME B16.34, ISO 5752, EN 593 |
Sealing Design Profile | Double-Eccentric (High-Performance) / Triple-Eccentric Layout |
Nominal Size Range | DN50 to DN2000 / 2 Inch to 80 Inch |
Pressure Ratings | PN10, PN16, PN25 / ASME Class 150, Class 300 |
Body Matrix Metallurgy | Cast Steel WCB / Ductile Iron with Heavy Anti-Corrosive Coating |
Disc Seal Metallurgy | Premium Stainless Steel (SS304 / SS316) Precision-Polished |
Sealing Seat Architecture | High-Temperature Resilient EPDM/PTFE or Metal-to-Metal Hard Seal |
End Connection Interface | Flanged Ends (ASME B16.5 / DIN EN 1092-1 / BS 4504) |
Accessory Integration | Limit Switch Box (On/Off Feedback), Solenoid Valve, Air Regulator |
2. Key Features and Engineered Advantages
1. High-Performance Multi-Eccentric Sealing Design: The valve features a sophisticated double-eccentric/triple-eccentric shaft alignment that allows the stainless steel disc to detach instantly from the seat ring during the first few degrees of opening. This geometry drastically decreases localized seat friction, prevents premature wear, and extends the valve's working life.
2. Premium Stainless Steel Disc Matrix: The flow-optimized disc is cast from high-grade stainless steel (SS304/SS316) and micro-polished along its sealing radius. This ensures excellent resistance against high-temperature fluid erosion, wire-drawing damage, and chemical pitting.
3. Integrated Smart Automation & Feedback Package: The top-mounted aluminum pneumatic actuator delivers rapid, reliable quarter-turn (90-degree) actuation. Coupled with an IP67-rated limit switch box, it provides operators with immediate mechanical beacon indication and remote electrical signaling.
4. Heavy Flanged Connection Structural Integrity: Unlike wafer-type valves that rely on adjacent flange compression, this flanged butterfly valve securely bolts directly to the pipeline. This structural stability effectively prevents pipeline sagging, manages thermal expansion stress, and simplifies downstream line maintenance.
5. High-Temperature Utility Optimization: Every structural layer—from the reinforced shaft bearing bushings to the specialized internal core seals—is meticulously chosen to handle high-temperature industrial environments without binding, sticking, or structural deformation.
3. Typical Industry Applications
The SDF high-temperature automated flanged butterfly valve provides elite control across high-volume fluid utilities:
1. Industrial HVAC & District Heating Networks: High-capacity chilled water distribution lines, commercial hot water loop isolation, condenser water networks, and utility headers.
2. Power Plant Utility & Cooling Infrastructure: Cooling tower circulation loops, low-pressure steam utility isolation, auxiliary intake lines, and water treatment manifolds.
3. Petrochemical Processing & Wastewater Utilities: Industrial effluent treatment networks, chemical cooling loops, low-pressure non-aggressive gas lines, and tank farm filling manifolds.
4. Metallurgy & Industrial Furnace Utilities: Hot air blast control loops, exhaust gas recirculation channels, cooling water manifolds, and low-pressure utility gas lines.
4. Quality Assurance and Precision Pre-Shipment Compliance Testing
To guarantee zero-leakage security and absolute operational longevity in automated loops, every SDF pneumatic flanged butterfly valve clears strict validation protocols:
Hydrostatic Body Shell Pressure Diagnostics: Every valve housing is pressure-tested at 1.5× its nominal design pressure to verify full casting density, eliminate structural welding defects, and rule out subsurface porosity.
API 598 Strict Bi-Directional Leakage Verification: Seating interfaces are subjected to detailed liquid and pneumatic pressure barriers to ensure zero bubble bypass under full closed conditions.
Automated Cycle Calibration & Kinematic Integrity Checks: The fully integrated package (valve, actuator, and limit switch box) undergoes consecutive cycling tests at the factory to verify torque limits, clean response speeds, and accurate digital signal feedback.
