2″-1500LB Pneumatic Globe Valve
Description
TECHNICAL DATA SHEET
Product Name: 2-inch 1500LB Pneumatic Actuated Globe Valve
Model/Specification: 2″-1500LB-PNEUMATIC-GLOBE
Valve Type: Pneumatic Globe Valve (Control / On-Off)
Connection Type: Flanged (RF/RTJ) / Butt Weld (BW) User specified
1. Basic Design Parameters
| Parameter | Standard/Specification |
|---|---|
| Size | 2 inches (DN50) |
| Pressure Class | Class 1500 LB (PN250 / 3600 PSI) |
| Body Material | Forged Carbon Steel (A105) / Forged Stainless Steel (A182 F304/F316) / Alloy Steel (F22) User specified |
| Manufacturing Process | Forged Steel (Close Die Forged) |
| Design Standard | ASME B16.34 / API 602 / BS 5352 |
| End Connection Standard | ASME B16.5 (Flanged RF/RTJ) / ASME B16.25 (BW) |
| Face to Face Standard | ASME B16.10 |
| Test & Inspection Std. | API 598 / ISO 5208 |
| Leakage Class | Class V / Class VI (Soft seat) per ANSI/FCI 70-2 |
| Fire-Safe Design | API 607 (Optional) |
2. Technical Specifications
| Parameter | Details |
|---|---|
| Valve Type | Straight Pattern Globe Valve, Forged Construction |
| Bonnet Type | Bolted Bonnet / Pressure Seal (for high pressure) |
| Stem Type | Outside Screw and Yoke (OS&Y), Rising Stem |
| Disc Type | Parabolic / Needle-type Disc (for throttling) |
| Seat Type | Metal Seat (Standard) / Soft Seat (Optional – PEEK/PTFE) |
| Applicable Media | Steam, Water, Oil, Gas, Corrosive Fluids (depending on material) |
| Temperature Range | -29°C to +425°C (CS/A105) / up to +550°C (F22) / up to +180°C (SS with PTFE) |
| Flow Direction | Flow over disc (standard) / Flow under disc (optional) |
| Operation | Pneumatic Actuator (Double-acting / Spring-return) |
3. Pneumatic Actuator Specifications
| Parameter | Details |
|---|---|
| Actuator Type | Pneumatic Piston / Diaphragm Actuator |
| Action Mode | Double-Acting / Spring-Return (Fail-Open / Fail-Close) |
| Air Supply Pressure | 3 – 8 bar (40 – 115 PSI) typical |
| Control Type | On-Off (with solenoid valve) / Modulating (with positioner) |
| Positioner | Electro-pneumatic (4-20mA input) / Pneumatic (optional) |
| Accessories | Limit Switches, Solenoid Valve, Air Filter Regulator, Boosters, Manual Override |
| Mounting Bracket | Custom fabricated, ISO 5211 compliant mounting |
| Manual Override | Handwheel (optional) |
| Ambient Temperature | -20°C to +80°C (standard) |
4. Material of Construction (Recommended – Carbon Steel)
| Part Name | Material | Standard/Grade |
|---|---|---|
| Body | Forged Carbon Steel | ASTM A105 |
| Bonnet | Forged Carbon Steel | ASTM A105 |
| Disc / Valve Plug | Stainless Steel + Hardfacing | A276 420 / A182 F304 + Stellite |
| Seat Ring | Stainless Steel (Integral or Renewable) | A182 F304 / F316 (Hardfaced) |
| Stem | Stainless Steel | ASTM A182 F6a (13Cr) / A276 420 |
| Gasket | Spiral Wound | Stainless Steel + Graphite |
| Packing | Flexible Graphite / PTFE | Low sulfur graphite |
| Stem Nut | Aluminum Bronze | C95400 / CuAl10Fe3 |
| Body Bolts/Nuts | Alloy Steel | ASTM A193 B7 / A194 2H |
| Yoke | Cast Iron / Fabricated Steel | For actuator mounting |
*For Stainless Steel version (A182 F304/F316): body/bonnet to SS, bolting changes to A193 B8 / A194 8 *
5. Main Dimensions & Connection Details
Note: Dimensions for 2″ Class 1500 Flanged Globe Valve. Based on industry standards .
5.1 Valve Body Dimensions (Face-to-Face)
| Size | Pressure Class | L (RF/RTJ) mm | L (RF/RTJ) in | H (Open) mm | H (Open) in | Weight (kg) | Weight (lbs) |
|---|---|---|---|---|---|---|---|
| 2″ | 1500LB | 368 – 371 | 14.5 – 14.6 | 355 – 524 | 14.0 – 20.6 | 28 – 53 | 62 – 117 |
*Note: H(open) and weight vary by manufacturer and actuator size. Valve body weight approx 28-53kg, actuator adds additional weight.*
5.2 Flange Details (Per ASME B16.5 – Class 1500)
| Parameter | 2″ Flange |
|---|---|
| Flange Diameter (OD) | 215 mm (8.5 in) |
| Bolt Circle Diameter (PCD) | 165.1 mm (6.5 in) |
| Number of Bolt Holes | 8 |
| Bolt Hole Diameter | 25.4 mm (1.0 in) |
| Bolt Thread Size | 7/8″ UNC |
| Raised Face Height | 7 mm (0.28 in) |
| RTJ Groove | Per ASME B16.5 |
6. Pressure-Temperature Rating (ASME B16.34 / Class 1500)
Material Group: Carbon Steel (ASTM A105)
| Temperature (°C) | Working Pressure (bar) | Working Pressure (psi) | Notes |
|---|---|---|---|
| -29 to 38 | 250 | 3625 | Maximum Rating (Class 1500) |
| 100 | 235 | 3400 | |
| 200 | 220 | 3190 | |
| 300 | 205 | 2970 | |
| 400 | 190 | 2755 | |
| 425 | 175 | 2540 | Max for A105 |
*For Stainless Steel (F304/F316): similar ratings up to 180°C (PTFE seats) or higher with metal seats . For F22 Alloy Steel: up to 550°C with derating .*
7. Flow Characteristics (2″ – Class 1500)
| Parameter | Value |
|---|---|
| Flow Coefficient Cv (approx) | ~50 – 80 (typical for 2″ globe valve) |
| Flow Coefficient Kv (approx) | ~43 – 70 |
| Flow Characteristic | Linear / Equal Percentage (depending on trim) |
| Seat Leakage Class | Class V (Metal Seat) / Class VI (Soft Seat) per ANSI/FCI 70-2 |
8. Test Pressure (API 598)
| Test Type | Medium | Pressure (bar) | Pressure (psi) | Acceptance Criteria |
|---|---|---|---|---|
| Shell Test (Hydrostatic) | Water | 375 | 5440 | 1.5 x 38°C Rating (no visible leakage) |
| High-Pressure Seat Test | Water | 275 | 3990 | 1.1 x 38°C Rating (Rate A/B per API 598) |
| Low-Pressure Seat Test | Air / N2 | 5.5 – 7.0 | 80 – 100 | Bubble-tight |
| Actuator Test | Air | 5.5 | 80 | Function test (full stroke) |
9. Pneumatic Actuator Selection Guide
| Actuator Size | Air Supply | Thrust | Action Type | Suitable for |
|---|---|---|---|---|
| Small | 4-6 bar | Low | Spring-Return | On-Off, low DP |
| Medium | 5-7 bar | Medium | Double-Acting | Modulating control |
| Large | 6-8 bar | High | Double-Acting | High DP, emergency shutdown |
Note: Actuator sizing depends on differential pressure, required fail-safe action, and operating speed. Final selection by manufacturer based on process conditions.
10. Features & Applications
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Key Features:
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High Pressure Capability (1500LB): Designed for demanding high-pressure applications up to 250 bar .
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Forged Body Construction: Provides superior strength and reliability compared to cast valves .
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Pneumatic Actuation: Fast response for on-off or modulating control with 4-20mA positioner options .
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Excellent Throttling Control: Globe valve design provides precise flow regulation.
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Flexible Configuration: Available with spring-return (fail-safe) or double-acting actuators .
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Manual Override: Optional handwheel allows manual operation during air supply failure .
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Versatile Material Options: Carbon steel, stainless steel, or alloy steel (F22) for various services .
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Multiple Seat Options: Metal seats for high temperature, soft seats for zero leakage.
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Low Fugitive Emissions: Optional live-loaded packing for emissions control.
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Wide Temperature Range: -29°C to 550°C depending on materials .
-
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Main Applications:
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Power Plants: High-pressure steam and feedwater control .
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Refineries & Petrochemical: Hydrocarbon processing, high-pressure fluid control.
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Oil & Gas Production: Wellhead control, gathering systems.
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Pipeline Systems: Pressure control and isolation.
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Chemical Processing: Corrosive fluid handling (with SS materials).
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Industrial Boilers: Blowdown and steam control.
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11. Ordering Information
Please specify when ordering:
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Valve size: 2″ (DN50)
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Pressure class: 1500LB
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Body material: A105 / F304 / F316 / F22
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End connections: Flanged RF/RTJ / BW
-
Seat type: Metal / Soft (PEEK/PTFE)
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Actuator action: Double-acting / Spring-return (Fail-Open / Fail-Close)
-
Control type: On-Off / Modulating (4-20mA)
-
Accessories: Positioner, solenoid valve, limit switches, air filter regulator
-
Special requirements: Fire-safe, NACE, oxygen cleaning, etc.
Disclaimer: The above data is prepared based on common industry standards (ASME B16.34, API 598, API 602) for pneumatic globe valves . Specific dimensions, materials, and actuator sizing may vary by manufacturer based on actual pressure and temperature conditions. The final technical agreement and certified drawings shall prevail.
