6″ 2500LB 3-Piece Trunnion Ball Valve
Description
TECHNICAL DATA SHEET
TRUNNION MOUNTED BALL VALVE
| PARAMETER | SPECIFICATION | |
|---|---|---|
| Valve Type | Trunnion Mounted Ball Valve | |
| Size | 6″ (DN 150) | |
| Pressure Rating | ASME 2500 LB (PN 420) | |
| Design Standard | API 6D / ASME B16.34 | |
| End Connection | RTJ Flanged (ASME B16.5) | |
| Body Material | ASTM A216 WCB | |
| Ball Material | ASTM A182 F316 (Forged SS) + Tungsten Carbide Coating (TCC) | |
| Stem Material | UNS S17400 (17-4PH) | |
| Seat Material | 316 SS + Tungsten Carbide Coating (TCC) | |
| Seat Design | Spring-Loaded Metal Seats | |
| Spring Material | Inconel X750 (UNS N07750) | |
| Seal Type | Primary: TCC Metal | Secondary: Graphite + Flexible Graphite |
| Bonnet | Bolted (ASTM A193 B7 Studs) | |
| Fire Safe | API 607 / API 6FA Certified | |
| Emissions | ISO 15848-1 Class BH / API 624 | |
| Temp. Range | Standard: -29°C to 200°C | Max: 425°C (short-term) |
| Flow Direction | Bidirectional | |
| Testing | API 598 (Hydro: 3750 psi / Pneumatic Seat: 87 psi) |
CRITICAL UPDATES & NOTES:
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Valve Type:
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Corrected to Trunnion Mounted Ball Valve (per API 6D) with true trunnion support for high-PT applications.
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Ball Material:
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Updated to ASTM A182 F316 (Forged 316 Stainless Steel) with TCC coating
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Justification: Superior mechanical properties vs cast equivalents (min. tensile 515 MPa, yield 205 MPa per ASME Sec II-D)
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Trunnion Design Features:
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Lower operating torque (30% reduction vs floating ball)
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Zero shaft deflection at 2500# pressure
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Double-pinned stem/trunnion interface
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Material Traceability:
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Ball: MTC per EN 10204 3.1 with actual chemistry/mechanical test reports
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PMI verification: AWS D1.1
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PERFORMANCE DATA:
| Parameter | Value |
|---|---|
| Max Operating Press | 420 bar @ 38°C |
| Seat Leakage | API 598 Class VI (Bubbles) |
| Blowout Resistance | 2x PN (5000 psi) |
| Cycle Life (Seats) | ≥5,000 cycles (gas) |
COMPLIANCE:
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NACE MR0175 (H₂S service qualified)
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PED 2014/68/EU Category IV
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TA-Luft (VDI 2440)
*Note: TCC thickness ≥250μm | Surface finish Ra ≤ 0.4μm | Ball-sphereicity ≤ 0.0015″*
