F70D
Manual Triple-Eccentric Metal-Seated Butterfly Valve
Design Features
The core advantage of manual triple-eccentric hardened sealing butterfly valves lies in their virtually zero-friction design, which effectively addresses sealing wear and leakage under high-temperature and high-pressure conditions. The eccentric structure significantly extends sealing surface lifespan, while bidirectional hardened sealing achieves ANSI Class VI virtually zero leakage (compliant with API 598 standards) across a wide temperature range (-40°C to up to 600°C). Maintaining reliable shutoff in corrosive and particulate media, these valves represent a durable, energy-efficient alternative to gate and globe valves in metallurgical, power, and petrochemical applications.
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| Product Name | Manual Triple-Eccentric Metal-Seated Butterfly Valve |
| Model Number | F70D |
| Nominal Diameter | NPS 2" ~ 120" (DN50 ~ DN3000) |
| Pressure Rating | Class 150 ~ Class 1500 (PN16 ~ PN250) |
| Body Material | Carbon Steel, 304 Stainless Steel, 316 Stainless Steel |
| Seal Material | PTFE, Metal-to-Metal Seal, Hard Alloy (Stellite or Tungsten Carbide) |
| Leakage Class | ANSI Class VI (Bubble-tight) |
| Medium Temperature | -120°C ~ 420°C |
| Connection Type | Butt-Weld (2), Wafer (3), Flanged (4) (ASME B16.5 / ISO 7005 / API 605) |
| Trim Configuration | Triple-Eccentric Metal-Seated Butterfly Valve (D) |
| Control Accuracy | ±0.1% (Positioning Repeatability) |
| Protection Rating | IP67 (Dust-tight & Immersion Resistant up to 1m) |
| Explosion Protection | Exd II BT4 (Flameproof Enclosure) |
| Manual Override | Lever Handle |
| Ambient Temperature | -25°C ~ +70°C, -40°C ~ +70°C (Low-Temp Option) |
| Ambient Humidity | ≤95% RH (Non-condensing) |
| Action Type | Quarter-turn On/Off |
| Optional Accessories | Handwheel, Locking Device, Position Indicator, Gear Operator, Limit Switch Box, Anti-static Kit, Fire-safe Design Certification |
| Stroke (°) | 0° – 90° (Quarter-turn Operation) |
| Remarks | Other special seal materials or temperature requirements can be customized according to customer specifications. |
