3″-2500LB Open Die Forged Globe Valve
Description
Forged Steel Stop Valve Technical Data Sheet
(Free Forging Process / BW Connection)
1. Product Overview
| Item | Description |
|---|---|
| Product Type | Forged Steel Stop Valve / Forged Steel Globe Valve |
| Manufacturing Process | Free Forging Process (Integrally forged body, dense structure, high strength) |
| Design Standard | API 602, API 6D, ASME B16.34, BS 5352, ISO 15761, GB/T 12235 |
| Structure Type | Straight Pattern / Y-Pattern / Angle Pattern |
| Connection Type | Butt Welding Ends (BW) |
| Bonnet Type | Bolted Bonnet / Welded Bonnet / Pressure Seal Bonnet |
| Operation | Handwheel Operated / Gear Operated (Optional) / Electric Actuator (Optional) / Pneumatic Actuator (Optional) |
| Nominal Size | NPS 1/4″ ~ 4″ (DN8 ~ DN100) |
| Pressure Class | Class 150 ~ Class 2500 (PN16 ~ PN420) ; Higher classes available upon request |
| Working Temperature | -29℃ ~ +425℃ (Carbon Steel); -29℃ ~ +550℃ (Alloy Steel); -196℃ ~ +800℃ (Stainless Steel / Special Materials) |
| Applicable Media | Water, Steam, Oil, Natural Gas, Corrosive Media, Cryogenic Media (LNG, LPG, N2), etc. |
| Testing Standard | API 598, API 6D, JB/T 9092, GB/T 13927, ISO 15761 |
2. Applicable Standards & Specifications
| Item | Standard |
|---|---|
| Design & Manufacturing | API 602, API 6D, ASME B16.34, BS 5352, ISO 15761, GB/T 12235 |
| Butt Weld End Dimensions | ASME B16.25, ASME B16.34, GB/T 12224 |
| Socket Weld End Dimensions | ASME B16.11 |
| Face-to-Face / End-to-End Dimensions | API 6D, ASME B16.10, GB/T 12221, Manufacturer’s Standard |
| Pressure-Temperature Rating | ASME B16.34, GB/T 9131 |
| Testing & Inspection | API 598, API 6D, JB/T 9092, GB/T 13927, ISO 15761 |
| Fire-Safe Design | API 607 / API 6FA (Optional) |
| Anti-Static Device | BS 5352 / API 602 (Optional) |
| Blowout-Proof Stem | Yes (Compliant with design standards) |
| NACE Compliance | NACE MR0175 / ISO 15156 (Optional) |
3. Main Technical Parameters
| Item | Parameter Range / Description |
|---|---|
| Pressure Class | Class 150 / 300 / 600 / 800 / 900 / 1500 / 2500 / 4500 |
| Shell Test Pressure | 1.5 × Rated Pressure (per API 598) |
| Seat Test Pressure | 1.1 × Rated Pressure (Hydrostatic); 0.4 ~ 0.7 MPa (Pneumatic) |
| Applicable Temperature | -29℃ ~ +425℃ (Carbon Steel); -29℃ ~ +550℃ (Alloy Steel); -196℃ ~ +800℃ (Stainless Steel / Inconel / Special Materials) |
| Bonnet Type | Bolted Bonnet / Welded Bonnet / Pressure Seal Bonnet |
| Stem Type | Outside Screw and Yoke (OS&Y) / Rising Stem |
| Flow Design | Reduced Bore / Full Bore |
| Flow Direction | Above the disc (Standard) / Below the disc (Optional) |
| Leakage Class | API 598 (Zero leakage for soft seat; Compliant with API 598 for metal seat) |
| Operation | Handwheel (Standard); Gear / Electric / Pneumatic (Optional) |
4. Free Forging Process Advantages
| Feature | Description |
|---|---|
| Integral Forging | Valve body manufactured by integral free forging process, ensuring continuous metal grain flow, dense structure, elimination of casting defects, and higher strength |
| Material Traceability | Forgings manufactured to ASTM A182 or equivalent standards with full material traceability, suitable for high pressure, high temperature, and critical services |
| Pressure Capability | Forged structure enables higher pressure and temperature ratings, particularly suitable for Class 600 and above high-pressure applications |
| Welding Performance | Forged steel has uniform chemical composition, excellent welding performance, ensuring reliable weld quality when butt welded to pipelines |
| Compact Structure | Forged valves are smaller in size and lighter in weight, facilitating installation and maintenance |
| API 6D Compliance | Meets API 6D requirements for pipeline valves, ensuring reliability for critical service applications |
5. Material of Construction (Per API 602 / API 6D / ASME Standards)
| Part Name | Carbon Steel Series | Alloy Steel Series | Stainless Steel Series | Low Temp / Cryogenic Series | Special Alloy Series |
| :— | :— | :— | :— | :— |
| Body | ASTM A105 | ASTM A182 F11/F22 | ASTM A182 F304(L)/F316(L) | ASTM A350 LF2 | Monel / Inconel / Hastelloy / Titanium |
| Bonnet | ASTM A105 | ASTM A182 F11/F22 | ASTM A182 F304(L)/F316(L) | ASTM A350 LF2 | As per body material |
| Disc | A276 420 / F6a + STL | F6a / F304 + STL | A276 304(L)/316(L) + STL | A276 304 + STL | As per body material |
| Stem | A182 F6a / 17-4PH | A182 F304 / 17-4PH | A182 F304(L)/F316(L) | A182 F304 | Monel K500 / Inconel 718 |
| Seat Ring / Seal Face | Integral Seat / Hardfaced with Stellite / PCTFE / PEEK (for soft seal) |
| Gasket | 304 + Flexible Graphite / 316 + Flexible Graphite / Ring Joint |
| Packing | Flexible Graphite / PTFE / GRAFOIL / Low Temp Packing |
| Bolting / Stud | A193 B7 | A193 B16 | A193 B8/B8M | A320 L7 | A453 660 |
| Nut | A194 2H | A194 4 | A194 8/8M | A194 7 | A194 8M |
| Handwheel | ASTM A197 (Malleable Iron) / Fabricated Steel |
| Applicable Media | Water, Steam, Oil | Steam, High Temp Oil | Corrosive Media | LNG, LPG, Cryogenic Gases | Sour Gas, Sea Water, Acid |
| Applicable Temperature | -29℃ ~ 425℃ | -29℃ ~ 550℃ | -196℃ ~ 800℃ | -196℃ ~ 200℃ | As required |
6. Structural Features & Working Principle
6.1 Structural Features
| Feature | Description |
|---|---|
| Free Forged Body | Integrally forged, no casting defects, high pressure bearing capacity, suitable for high pressure and high temperature applications |
| API 6D Compliant Design | Designed and manufactured to meet API 6D requirements for pipeline valves, ensuring reliability for critical services |
| Multiple Bonnet Designs | – Bolted Bonnet: Spiral wound gasket seal, easy disassembly for maintenance – Welded Bonnet: Threaded connection + full seal welding, eliminates external leakage – Pressure Seal Bonnet: Higher pressure provides better seal, suitable for high pressure applications |
| Blowout-Proof Stem | Stem designed with anti-blowout feature, prevents stem ejection even if packing fails under pressure |
| Backseat Design | When fully open, stem backseat contacts bonnet to form a seal, allowing packing replacement without valve disassembly |
| Hardfaced Sealing Surfaces | Disc and seat sealing surfaces hardfaced with Cobalt-based alloy (Stellite), wear-resistant, erosion-resistant, long service life |
| Butt Weld Ends | Beveled ends per ASME B16.25, can be directly welded to pipeline, reducing potential leak points |
| Extended Bonnet (Optional) | For cryogenic service to protect packing from low temperatures |
| Fire-Safe Design (Optional) | Meets API 607 / API 6FA requirements for fire-safe service |
6.2 Working Principle
Forged steel stop valves operate by rotating the handwheel to raise or lower the stem, causing the disc to move perpendicularly along the centerline of the seat. When the disc contacts the seat, flow is stopped; when the disc lifts, flow is allowed. Since the stem movement is parallel to the flow direction, operating torque is lower and seal face wear is minimized, providing excellent shut-off performance. The valve can also be used for flow regulation due to the proportional relationship between disc travel and flow area .
7. Butt Weld End Dimensions (Per ASME B16.25)
Butt weld end bevel type and dimensions shall comply with ASME B16.25 requirements. Specific dimensions vary based on pressure class and wall thickness, to be provided by manufacturer. Typical butt weld end dimensions are as follows (reference):
| NPS | Pipe OD (mm) | Bevel Angle | Root Face (mm) |
|---|---|---|---|
| 1/2″ | 21.3 | 37.5° ± 2.5° | 1.6 ± 0.8 |
| 3/4″ | 26.7 | 37.5° ± 2.5° | 1.6 ± 0.8 |
| 1″ | 33.4 | 37.5° ± 2.5° | 1.6 ± 0.8 |
| 1-1/4″ | 42.2 | 37.5° ± 2.5° | 1.6 ± 0.8 |
| 1-1/2″ | 48.3 | 37.5° ± 2.5° | 1.6 ± 0.8 |
| 2″ | 60.3 | 37.5° ± 2.5° | 1.6 ± 0.8 |
| 2-1/2″ | 73.0 | 37.5° ± 2.5° | 1.6 ± 0.8 |
| 3″ | 88.9 | 37.5° ± 2.5° | 1.6 ± 0.8 |
| 4″ | 114.3 | 37.5° ± 2.5° | 1.6 ± 0.8 |
8. Dimensions & Weights (Per API 6D / ASME B16.10)
Note: The following dimensions are typical values. Actual dimensions may vary by pressure class, bonnet type, and manufacturer. For NPS 2-1/2″ to 4″, dimensions will vary significantly based on pressure class and design. Final dimensions to be confirmed on manufacturer’s approved drawing per API 6D requirements .
Class 800 / 900 / 1500 Forged Steel Butt Weld Globe Valve Typical Dimensions
| NPS | DN | L (mm) | H (Open) mm | W (Handwheel) mm | Weight (kg) |
|---|---|---|---|---|---|
| 1/2″ | 15 | 79 ~ 140 | 166 ~ 335 | 100 ~ 180 | 1.9 ~ 12.6 |
| 3/4″ | 20 | 79 ~ 140 | 166 ~ 335 | 100 ~ 180 | 1.9 ~ 12.4 |
| 1″ | 25 | 92 ~ 140 | 171 ~ 335 | 100 ~ 180 | 2.1 ~ 12.2 |
| 1-1/4″ | 32 | 111 ~ 178 | 207 ~ 408 | 125 ~ 200 | 3.5 ~ 21.0 |
| 1-1/2″ | 40 | 120 ~ 178 | 240 ~ 408 | 160 ~ 250 | 6.0 ~ 28.7 |
| 2″ | 50 | 152 ~ 216 | 260 ~ 525 | 160 ~ 300 | 7.5 ~ 53.7 |
| 2-1/2″ | 65 | 216 ~ 260 | 350 ~ 550 | 200 ~ 350 | 15.0 ~ 60.0 |
| 3″ | 80 | 283 ~ 310 | 400 ~ 600 | 250 ~ 400 | 25.0 ~ 85.0 |
| 4″ | 100 | 305 ~ 350 | 450 ~ 700 | 300 ~ 450 | 35.0 ~ 120.0 |
Class 2500 Forged Steel Butt Weld Globe Valve Typical Dimensions
| NPS | DN | L (mm) | H (Open) mm | W (Handwheel) mm | Weight (kg) |
|---|---|---|---|---|---|
| 1/2″ | 15 | 186 | 315 ~ 335 | 160 ~ 200 | 11.2 ~ 12.6 |
| 3/4″ | 20 | 186 | 315 ~ 335 | 160 ~ 200 | 10.5 ~ 12.4 |
| 1″ | 25 | 186 | 315 ~ 335 | 160 ~ 200 | 10.1 ~ 12.2 |
| 1-1/4″ | 32 | 232 | 408 ~ 435 | 200 ~ 240 | 21.0 ~ 28.0 |
| 1-1/2″ | 40 | 232 | 408 ~ 435 | 200 ~ 280 | 19.6 ~ 26.4 |
| 2″ | 50 | 279 | 480 ~ 525 | 250 ~ 320 | 40.4 ~ 43.8 |
| 2-1/2″ | 65 | 330 | 550 ~ 600 | 300 ~ 400 | 60.0 ~ 90.0 |
| 3″ | 80 | 368 | 600 ~ 700 | 350 ~ 450 | 85.0 ~ 130.0 |
| 4″ | 100 | 457 | 700 ~ 850 | 400 ~ 500 | 120.0 ~ 180.0 |
9. Testing & Inspection (Per API 598 / API 6D)
| Test Type | Test Medium | Test Pressure | Acceptance Criteria |
|---|---|---|---|
| Shell Test | Water (with corrosion inhibitor) | 1.5 × Rated Pressure | No visible leakage through pressure boundary |
| High Pressure Seat Test | Water / Gas | 1.1 × Rated Pressure | Zero leakage (soft seat); Compliant with API 598 (metal seat) |
| Low Pressure Pneumatic Test | Air / Nitrogen | 0.4 ~ 0.7 MPa | No visible bubbles |
| Backseat Test | Water / Air | 1.1 × Rated Pressure | No visible leakage with valve fully open |
| Optional Tests | Helium / Other | As specified | As per customer requirements |
10. Installation, Operation & Maintenance Instructions
10.1 Pre-Installation
-
Remove protective covers from valve ends, clean interior of any debris
-
Verify valve model, pressure class, and material match service requirements
-
Check stem operation for smoothness, ensure handwheel direction indicators are clear
-
Inspect butt weld end bevels for any damage
10.2 Installation
-
Ensure pipeline is clean, free from weld slag, scale, and debris
-
Valve can be installed in any orientation, but handwheel vertical or horizontal is recommended
-
When butt welding to pipeline, follow approved Welding Procedure Specification (WPS); perform post-weld heat treatment (PWHT) if required
-
Perform NDT on welds after welding to ensure quality
-
For cryogenic service, ensure proper insulation and extension bonnet orientation
10.3 Operation
-
Opening: Turn handwheel counterclockwise, stem rises, medium flows
-
Closing: Turn handwheel clockwise, stem lowers, disc contacts seat to shut off medium
-
Do not use extensions or impact tools to over-torque valve closing
-
For large bore or high-pressure valves with bypass, open bypass first to equalize pressure
-
For flow regulation, adjust handwheel to desired position (valve is suitable for throttling)
10.4 Maintenance
-
Packing Adjustment: If slight stem leakage occurs, evenly tighten gland nuts; do not over-tighten
-
Packing Replacement: With valve fully open, utilize backseat to isolate medium, allowing online packing replacement
-
Regular Operation: For valves not in regular service, operate monthly to prevent sticking
-
Seat Refurbishment: If sealing surfaces are damaged, re-hardface with Stellite and grind/lap as required
-
Cryogenic Service: Special attention to thermal cycles and material compatibility
11. Ordering Information
When ordering Forged Steel Butt Weld Globe Valves per API 6D, please specify:
| Item | Description |
|---|---|
| 1. Valve Type | Forged Steel Globe Valve / Forged Steel Stop Valve |
| 2. Model | J61H / J61Y / J65Y / J41Y / etc. |
| 3. Nominal Size | DN ______ (mm) / NPS ______ (1/4″ ~ 4″) |
| 4. Pressure Class | Class ______ (150 / 300 / 600 / 800 / 900 / 1500 / 2500 / 4500) |
| 5. Body Material | A105 / F11 / F22 / F304 / F316 / LF2 / Monel / Inconel / Titanium / etc. |
| 6. Bonnet Type | Bolted / Welded / Pressure Seal |
| 7. Seat / Disc Seal Material | Integral / Stellite Hardfaced / PCTFE / PEEK (for soft seal) |
| 8. Connection Type | Butt Weld BW (Per ASME B16.25) |
| 9. Operation | Handwheel / Gear / Electric / Pneumatic |
| 10. Applicable Media | ______ (Water / Steam / Oil / Gas / LNG / LPG / Chemical / etc.) |
| 11. Working Temperature | ______ ℃ (Cryogenic: -196℃ / High Temp: up to 800℃) |
| 12. Special Requirements | Fire-Safe / Anti-Static / NACE MR0175 / Oxygen Cleaning / Special Coating / Cryogenic Service / etc. |
| 13. Quantity | ______ units |
12. Available Options
| Option | Description |
|---|---|
| Fire-Safe Design | Per API 607 / API 6FA, secondary metal-to-metal seal activates if soft seal is destroyed |
| Anti-Static Device | Springs ensure electrical continuity between stem and body, preventing static accumulation |
| NACE Compliance | Materials certified per NACE MR0175 / ISO 15156 for sour service |
| Extension Bonnet | For low temperature (cryogenic) or high temperature service to protect packing |
| Gear Operator | For larger sizes (NPS 3″ and above) or high operating torque requirements |
| Electric / Pneumatic Actuator | For remote automatic control |
| Locking Device | Padlockable handwheel for safety lockout/tagout |
| Special Coatings | Epoxy coating / Chrome plating / Electroless Nickel Plating / Zinc-rich coating |
| Cryogenic Service | Special design for LNG, LPG, N2, and other cryogenic applications down to -196℃ |
| High Temperature Service | Special material selection for applications up to 800℃ |
Note: This technical data sheet is a general guideline for Forged Steel Butt Weld Globe Valves, compliant with API 602, API 6D, ASME B16.34, and related standards. The free forging process ensures high reliability and long service life under high pressure conditions. Size range has been expanded to NPS 4″ (DN100) per API 6D standards for forged steel valves . For specific project requirements, including detailed dimensions, material selection, and pressure class, please refer to the approved manufacturer’s drawing and purchase order. Specifications are subject to change without notice.
