3-Piece Trunnion Ball Valve 8″-150LB
Description
TECHNICAL DATA SHEET
Three-Piece Trunnion Mounted Ball Valve
Project: _______________
Tag No.: _______________
Date: _______________
1. BASIC VALVE INFORMATION
| Item | Specification |
|---|---|
| Valve Type | Three-Piece Trunnion Mounted Ball Valve |
| Body Type | Three-Piece Bolted Body (Split Body) |
| Ball Support | Trunnion Mounted (Fixed Ball) |
| End Connection | Flanged, Raised Face (RF) |
| Nominal Size | NPS 8 (DN200) |
| Pressure Class | Class 150 |
| Body Material | A105 (Carbon Steel) |
| Service Medium | Water / Oil / Gas / General Purpose |
| Operation | Gearbox with Handwheel (Std.) / Actuator ready |
2. APPLICABLE CODES & STANDARDS
| Standard | Description |
|---|---|
| API 6D | Specification for Pipeline and Piping Valves |
| ASME B16.34 | Valve Flanged, Threaded, and Welding End Dimensions |
| ASME B16.5 | Pipe Flanges and Flanged Fittings (Class 150 RF) |
| ASME B16.10 | Face-to-Face and End-to-End Dimensions of Valves |
| API 598 / ISO 5208 | Valve Inspection and Testing |
| NACE MR0175 / ISO 15156 | Option: Sour Service (if required) |
| API 607 / ISO 10497 | Option: Fire Safe Design (if required) |
| ISO 5211 | Actuator Mounting Pad Dimensions |
3. MATERIALS OF CONSTRUCTION
| Component | Material | Standard / Remarks |
|---|---|---|
| Body | A105 | Carbon steel, forged |
| End Connectors | A105 | Flanged ends, integral or welded |
| Ball | A105 + Chrome Plating / A182 F304/F316 | Stainless steel / Hard chrome plated carbon steel |
| Seat | PTFE / Reinforced PTFE / Devlon | Self-lubricating, low torque |
| Stem | A182 F6a / 17-4PH / A182 F304 | Stainless steel, anti-blowout design |
| Trunnion | A105 / Stainless Steel | Fixed support, double axial bearings |
| Body Seals | O-Ring (NBR/Viton) + Spiral Wound Gasket | Leak-proof design |
| Thrust Bearings | Stainless Steel + PTFE | Low friction, high load capacity |
| Bolting | A193 B7 / A194 2H | Stud bolts with heavy hex nuts |
4. DESIGN & PERFORMANCE CHARACTERISTICS
| Parameter | Specification |
|---|---|
| Pressure Class | Class 150 |
| Max. Allowable Working Pressure | Per ASME B16.34, A105 @ 38°C: 285 psi (19.6 bar) |
| Design Temperature Range | -29°C to +200°C (-20°F to +400°F) (Seat material dependent) |
| Seat Leakage Rate | API 598 / ISO 5208 Rate A (Zero leakage) |
| Cavity Pressure Relief | Automatic relief via seat design (upstream/downstream) |
| Anti-Static Device | Springs between ball/stem and body – per API 6D |
| Blowout-Proof Stem | Internally inserted, retained by shoulder |
| Fire Safe Design | Optional per API 607 / ISO 10497 |
| Double Block & Bleed (DBB) | Yes, per API 6D |
| Locking Device | Provided on gearbox / lever |
5. DIMENSIONS & CONNECTIONS
| Item | Dimension (inch / mm) |
|---|---|
| Flange Size & Type | 8″ Class 150 RF per ASME B16.5 |
| Face-to-Face Length | Per ASME B16.10 / API 6D – RF: 280 mm (11.02″) |
| Flange Drilling | ASME B16.5, 8″ 150LB – 8 bolt holes, 0.75″ dia. |
| Flange Raised Face Height | 0.06″ (1.6 mm) |
| Ball Bore Diameter | Full bore / Standard bore (as per design) |
| Stem Diameter | Per ISO 5211 actuator mounting |
| Gearbox Type | Worm gear with handwheel, locking device |
| Approx. Weight | Approx. 80–100 kg (manufacturer dependent) |
6. TESTING & INSPECTION
| Test | Standard / Requirement |
|---|---|
| Shell Test | API 598 / ISO 5208 – 1.5 x Rated Pressure |
| Seat Test (Low Pressure) | 80 psi (5.5 bar) – Zero leakage |
| Seat Test (High Pressure) | 1.1 x Rated Pressure – Zero leakage |
| Cavity Relief Test | Per API 6D |
| NDE Requirements | Visual, dimensional, PMI on A105 (optional) |
| Coating / Painting | Epoxy coating, color blue/silver (or as per spec) |
7. SPECIAL REQUIREMENTS & REMARKS
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Three-Piece Body Design
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Body consists of center body + two end flanges, bolted together.
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Allows easy maintenance, seat and ball replacement without removing valve from pipeline.
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Trunnion Mounted Ball
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Ball is fixed by trunnion shaft at bottom and top.
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Suitable for low torque, high pressure, and large size applications.
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Reduces seat wear and operating torque.
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Material Traceability
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All A105 pressure parts shall have full material traceability per EN 10204 3.1 or ASTM A105 certs.
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NACE Compliance (Optional)
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If sour service required, NACE MR0175 / ISO 15156 compliant materials to be used.
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Actuator Mounting
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ISO 5211 top flange prepared for future actuator mounting.
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Stem extension provided for insulation (if required).
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