3“ 2500LB Open-die Forging Steel Globe Valve
Description
TECHNICAL DATA SHEET: GLOBE VALVE
Size: 3″ (DN 80)
Pressure Rating: 2500 LB (ASME B16.34)
Design Standard: API 602 / ASME B16.34
1. MATERIAL SPECIFICATION
| Component | Material | Standard |
|---|---|---|
| Body & Bonnet | ASTM A182 F11 | Chrome Moly Steel |
| Disc | ASTM A182 F11 + Stellite 6 | Hardfaced Seat |
| Stem | ASTM A182 F6a (Gr. 410) | Martensitic SS |
| Body Seat | Stellite 6 Overlay | Weld Overlay |
| Gasket | Spiral Wound (SS316/F.Graphite) | EN 1514-1 |
| Bolting | ASTM A193 B7 + A194 2H | Alloy Steel |
| Packing | Flexible Graphite Rings | ISO 15848 |
| Handwheel | Ductile Iron (ASTM A536) | EP-Coated |
2. DESIGN FEATURES
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Type: Bolted Bonnet Globe Valve
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Flow Direction: Flow Under Disc (Standard)
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Stem Design: Rising Stem, Non-Rotating
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Bonnet Joint: Pressure Seal (Standard for 2500LB)
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Seating: Metal-to-Metal with Stellite 6 Hardfacing
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Packing System: Live-Loaded Gland (Graphite)
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Leakage Class: API 598 Class V (Enhanced Shut-off)
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Fire Safe: API 6FA Certified (Inherent for Metal Seats)
3. CONNECTIONS & DIMENSIONS
| Parameter | Specification |
|---|---|
| Ends | Butt Weld (BW) |
| Standard | ANSI B16.25 |
| Bevel Angle | 37.5° ± 2.5° |
| Root Face | 1.6 mm (1/16″) |
| Face-to-Face | ASME B16.10 (2500LB Series) |
| Wall Thickness | Schedule 160 (Min.) |
4. OPERATION & TESTING
| Parameter | Value |
|---|---|
| Operator | Handwheel (Manual) |
| Max. Operating Torque | ≤ 350 Nm (Calculated) |
| Shell Test Pressure | 3,750 psi (1.5 × Rating) |
| Seat Test Pressure | 2,750 psi (1.1 × Rating) |
| Backseat Test | 2,750 psi |
| Test Medium | Water (Shell), Air (Seat) |
| NDE Requirements | PT/LPI on Hardfaced Surfaces |
5. PERFORMANCE DATA
| Parameter | Value |
|---|---|
| Temp. Range | -29°C to +593°C (F11 Limit) |
| CV Value (Typ.) | ~ 120 (Full Open) |
| Flow Char. | Linear/Equal Percentage |
| Fugitive Emissions | ISO 15848-1 Class B (Standard) |
6. COMPLIANCE & CERTIFICATIONS
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Design Codes: ASME B16.34, API 602
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Testing: API 598, ASME B16.34 Annex B
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Material Certs: EN 10204 3.1
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Welding: WPS/PQR per ASME IX
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NDE: PT/Magnetic Particle on Pressure Parts
7. APPLICATIONS
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Services: High-Temp Steam, Power Plants, Refinery Piping
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Media: Superheated Steam (>400°C), Hot Oil, Non-corrosive Gases
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Critical Service: Erosion/Corrosion Resistance via Stellite
8. NOTES
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Pressure Seal Bonnet: Mandatory for 2500LB class (self-energizing at high pressure).
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Stellite Application:
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Disc: Full Stellite 6 facing (3mm min. thickness)
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Body Seat: 100% overlay with post-weld heat treatment
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Stem Hardening: Tip hardened to HRC 35-40 for wear resistance.
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Optional:
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Extended Bonnet (+200mm for >350°C service)
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Gear Operator (for torque >400 Nm)
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Cryogenic Treatment (for -196°C service)
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