Motorized Triple Offset Double Flange Butterfly Valve
Technical Data Sheet
(Typical Size: DN200 / Class 150 – can be customized)
- General Information
Item | Description |
Valve Type | Triple Offset Butterfly Valve |
Nominal Size | DN200 (8 Inch) or as specified |
Pressure Rating | Class 150 (PN20) or Class 300 / PN optional |
End Connection | Double Flange (to ASME B16.5 or EN 1092-1) |
Operation | Motorized Actuator |
Application | Bi-directional tight shut-off, frequent operation, high temperature / high pressure / corrosive media, steam, oil, natural gas, etc. |
- Design & Manufacturing Standards
Standard | Description |
Design Code | API 609 (Category B – Triple Offset) |
Flange Dimensions | ASME B16.5 Class 150 / 300 or EN 1092-1 PN10/PN16/PN25/PN40 |
Face-to-Face Dimension | API 609 (short or long pattern) or EN 558 Series 13 / 14 |
Pressure-Temperature Rating | ASME B16.34 |
Top Flange | ISO 5211 (for direct actuator mounting) |
Inspection & Testing | API 598 |
Leakage Rate | API 598 Rate A / ISO 5208 Rate A (Zero leakage) |
Fire Safe Design | API 607 / ISO 10497 (optional) |
- Main Materials (Typical – can be customized)
Component | Standard Material | Optional Materials |
Body | Carbon Steel (WCB) | Stainless Steel CF8M, CF3M, Duplex SS, Alloy Steel |
Disc | Stainless Steel CF8M | Duplex SS, Hastelloy, Nickel-Aluminum Bronze |
Stem | 17-4PH Precipitation Hardening SS | Inconel, Monel, Duplex SS |
Seat Sealing Surface | Stellite hardfacing | Nickel-based alloy, Tungsten Carbide |
Seal Ring | Multi-layer metal + graphite | All-metal seal, PTFE (low temperature) |
Packing | Flexible graphite + SS spacer rings | PTFE + graphite, low emission packing |
Fasteners | Stainless Steel A193 B8 | Alloy Steel B7 |
Gaskets | Flexible graphite + SS spiral wound | Metal ring gasket |
- Outline Dimensions & Weight (Typical – DN200 Class 150)
Dimension Parameter | Value (Short pattern, API 609) |
Face-to-Face Length L | Approx. 152 mm (DN200 Class 150 short) |
Flange Outer Diameter D | Approx. 345 mm (ASME B16.5 Class 150) |
Bolt Circle Diameter K | Approx. 298 mm |
Flange Thickness C | Approx. 29 mm |
Number / Diameter of Bolt Holes | 12 × 25 mm |
Center Height (flange face to center) | Approx. 108 mm |
Overall Height (excluding actuator) H | Approx. 450 mm |
Valve Weight (excluding actuator) | Approx. 85 kg |
Electric Actuator Weight (reference) | Approx. 25 – 50 kg (depending on torque and brand) |
Dimensions above are typical references. Final dimensions to be confirmed with manufacturer’s drawing.
- Pressure-Temperature Rating (ASME B16.34 – WCB body)
Temperature (°C) | Max. Working Pressure (bar) – Class 150 | Max. Working Pressure (bar) – Class 300 |
-29 ~ 38 | 19.6 | 51.1 |
100 | 17.6 | 46.6 |
150 | 15.3 | 44.8 |
200 | 13.2 | 41.9 |
250 | 11.2 | 39.5 |
300 | 9.2 | 37.1 |
350 | 7.5 | 34.1 |
400 | 5.5 | 30.2 |
425 | 4.4 | 26.8 |
Stainless steel bodies offer slightly different ratings. Refer to material pressure curves for details.
- Performance Data
Parameter | Value |
Pressure Rating | Class 150 / 300 (as required) |
Shell Test Pressure (water) | Class 150: 29 bar; Class 300: 76 bar |
Seat Test Pressure (water) | Class 150: 21 bar; Class 300: 56 bar |
Low-Pressure Air Seat Test | 6 bar |
Allowable Differential Pressure (bi-directional) | Full rated pressure |
Leakage Rate | Zero leakage (metal seated, API 598 Rate A) |
Temperature Range (standard metal seal) | -29°C ~ +425°C |
Suitable Media | Water, steam, oil, natural gas, corrosive media, etc. |
Max. Operating Torque (DN200 Class 150) | Approx. 200 – 350 N·m (on-off, with gearbox) |
- Electric Actuator Specification (Reference)
As electric actuators vary by brand and control requirements, below is a typical configuration recommendation:
Parameter | Typical Value |
Actuator Type | Quarter-turn electric actuator |
Mounting Flange | ISO 5211 F14 or F16 (depending on torque) |
Max. Output Torque | Based on valve torque + safety factor (DN200 Class 150 approx. 400–600 N·m) |
Power Supply | 380V / 3Ph / 50Hz or 220V / 1Ph |
Control Type | On-Off or Modulating (4-20mA) |
Enclosure Protection | IP67 (outdoor type) |
Explosion Proof (optional) | Ex d IIB T4 (flameproof) |
Accessories | Limit switches, torque switches, heater, local/remote control |
- Key Features
- Triple offset design – No friction during opening/closing; long service life, low torque
- Double flange connection – Can be independently installed between pipeline flanges; easy maintenance; suitable for large bore and high pressure
- Bi-directional zero leakage – Metal hard seal for high temperature, high pressure, corrosive and abrasive media
- Motorized actuation – Enables remote on/off, local operation, and signal feedback for automated systems
- Low operating torque – Lower than conventional hard-seal butterfly valves; allows more economical actuators
- Fire safe design (optional) – Compliant with API 607
- Ordering Information
Please provide the following when ordering:
- Valve size, pressure rating (Class or PN)
- Body, disc, and seat materials
- Flange standard and face-to-face standard
- Media name, temperature, and pressure
- Electric actuator power supply, control type (on-off/modulating), protection/explosion-proof rating
- Special requirements (fire-safe, low emission packing, third-party certification, etc.)
GUATANTEE:
SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.
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