DN250-PN16-RF Motorized Trunnion Ball Valve
Description
DN250 – PN16 – RF Motorized Trunnion Ball Valve
Technical Data Sheet – 2-Piece Body, Side Entry
1. General Information
| Item | Description |
|---|---|
| Valve Type | Trunnion Mounted Ball Valve |
| Nominal Size | DN250 (10 Inch) |
| Pressure Rating | PN16 (equivalent to Class 150 approx.) |
| Body Construction | 2-Piece Body |
| Body Entry Type | Side Entry |
| Flange Standard & Face | RF (Raised Face) to EN 1092-1 or ASME B16.5 |
| Operation | Motorized Actuator |
| Application | Frequent operation or remote control pipelines; suitable for oil, gas, water, etc. |
2. Design & Manufacturing Standards
| Standard | Description |
|---|---|
| Design Code | API 6D or ISO 17292 / BS 5351 |
| Body Style | 2-piece, side entry, with trunnion-mounted ball support |
| Flange Dimensions | EN 1092-1 PN16 RF or ASME B16.5 Class 150 RF |
| Face-to-Face Dimension | API 6D (long pattern) or ASME B16.10 (as required) |
| Pressure-Temperature Rating | ASME B16.34 or EN 12516 |
| Inspection & Testing | API 598 or ISO 5208 |
| Fire Safety Design | API 607 / ISO 10497 (optional) |
| Anti-Static Device | API 6D / ISO 17292 (standard) |
| Top Flange | ISO 5211 (direct mounting for electric actuator) |
3. Main Materials (Typical – can be customized)
| Component | Standard Material | Optional Materials |
|---|---|---|
| Body | Carbon Steel (WCB / A216 WCB) | Stainless Steel CF8M, CF3M, Duplex SS |
| Side Cover (Bonnet) | Carbon Steel (WCB) | Matching body material |
| Ball | Stainless Steel (A182 F316) – hard chrome plated or Ni-based alloy spray | Duplex SS, Hastelloy |
| Stem | Precipitation Hardening SS (17-4PH, A564 630) | Inconel, Monel |
| Seat Sealing Surface | PTFE / Reinforced PTFE (RPTFE) | PEEK, Nylon, Metal hardfacing (Stellite) |
| Seat Support Ring | Stainless Steel (A479 316) | Duplex SS |
| Packing | PTFE V-ring | Flexible graphite + PTFE, low emission packing |
| Fasteners | Stainless Steel A193 B8 | Alloy Steel B7 |
| Gaskets | Flexible graphite + SS spiral wound | PTFE |
4. Outline Dimensions & Weight (Typical values – may vary by manufacturer)
| Dimension Parameter | Value (Typical, API 6D long pattern) |
|---|---|
| Face-to-Face Length L | Approx. 457 mm (ASME B16.10 Class 150) |
| Flange Outer Diameter D | Approx. 406 mm (EN 1092-1 PN16) |
| Bolt Circle Diameter K | Approx. 355 mm |
| Flange Thickness C | Approx. 30 mm |
| Number / Diameter of Bolt Holes | 12 × 26 mm |
| Center Height (flange face to center) | Approx. 150 mm |
| Overall Height (excluding actuator) H | Approx. 330 mm |
| Valve Weight (excluding actuator) | Approx. 150 kg |
| Electric Actuator Weight (reference) | Approx. 25 – 45 kg (depending on torque and brand) |
⚠ Dimensions above are typical references. Final dimensions to be confirmed with manufacturer’s drawing.
5. Pressure-Temperature Rating (ASME B16.34 – WCB body)
| Temperature (°C) | Max. Working Pressure (bar) |
|---|---|
| -29 ~ 38 | 16.0 (PN16 rating) |
| 100 | 14.5 |
| 150 | 12.5 |
| 200 | 10.8 |
| 250 | 9.5 |
| 300 | 8.2 |
| 350 | 7.0 |
| 400 | 5.5 |
| 425 | 4.4 |
For PN16 rating, the maximum allowable working pressure at ambient temperature is 16 bar. Stainless steel (CF8M) bodies offer slightly better high-temperature performance.
6. Performance Data
| Parameter | Value |
|---|---|
| Pressure Rating | PN16 (16 bar @ 38°C) |
| Shell Test Pressure (water) | 24 bar |
| High-Pressure Seat Test (water) | 17.6 bar |
| Low-Pressure Air Seat Test | 6 bar |
| Allowable Differential Pressure | Full rated pressure, bi-directional |
| Leakage Rate | Soft seat: Zero leakage (ISO 5208 Rate A) Metal seat: Minimal or zero leakage (API 598 Rate A) |
| Temperature Range (PTFE seat) | -29°C ~ +150°C |
| Temperature Range (PEEK seat) | -29°C ~ +250°C |
| Suitable Media | Water, oil, gas, natural gas, mildly corrosive liquids |
| Valve Type | Trunnion mounted – low torque, bi-directional sealing |
| Anti-Static Design | Conductive path between ball, stem and body (standard) |
7. 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 F16 or F25 |
| Max. Output Torque | Based on valve torque + safety factor (valve torque approx. 300–500 N·m, select 600–800 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 |
8. Key Features
-
Trunnion mounted ball – Ball supported by upper and lower stems; suitable for large bore and high differential pressure; low operating torque, stable sealing performance
-
2-piece body + side entry – Easy inline maintenance; seats and seals can be replaced individually
-
Bi-directional sealing – Independent upstream and downstream seats; provides double block & bleed (DBB) capability
-
Fire safe design (optional) – Compliant with API 607; retains certain sealing integrity after fire exposure
-
Anti-static device – Prevents electrostatic charge accumulation
-
Blow-out proof stem – Conforms to API 6D requirements
-
Motorized actuator – Enables remote on/off, local operation, and signal feedback for automated control
9. Ordering Information
Please provide the following when ordering:
-
Valve size (DN250), pressure rating (PN16)
-
Body, ball, and seat materials (soft seated or metal seated)
-
Flange standard (EN or ASME) 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, anti-static, low emission packing, third-party certification, etc.)
