1. Product Overview
| Parameter | Specification |
|---|
| Product Name | Forged Steel Globe Valve (Screwed/Socket Weld) |
| Description | Globe Valve Class 800 Threaded for Oil & Gas, Petrochemical, Water Treatment. KSA/UAE export. API compliant. AHMEDABAD manufacturer. Request enquiry. |
2. Salient Features
- Shell: 7.7 MPa (1120 psi)
- Seat: 5.8 MPa (840 psi)
- Max Working Pressure: 13.8 MPa (2000 psi @ 100°F)
- Size Range: 1/2" to 2" (15mm to 50mm)
- Pressure Rating: ANSI Class 800
- Temperature Range: -29°C to +525°C
- End Connection: Screwed NPT / Socket Weld
- Operation: Handwheel
3. Applications
SteamOil & GasHigh Pressure
4. Technical Specifications
| Parameter | Specification |
|---|
| Valve Type | Heavy-Duty Globe Valve, Bolted Bonnet (OS&Y) or Pressure Seal Bonnet (high pressure) |
| Size Range | DN50 (2") to DN400 (16") |
| Pressure Rating | ASME B16.5 Class 600# / 900# / 1500# / 2500# (PN100 to PN420) |
| End Connection | Flanged RF / RTJ (Ring Type Joint) per ASME B16.5; Butt-Welding ends per ASME B16.25 |
| Face-to-Face | ASME B16.10 / BS 2080 |
| Design Standard | API 623 (Cast Steel Globe) / ASME B16.34 / API 602 (Forged Steel Globe) / BS 1873 |
| Testing Standard | API 598 / ISO 5208 -- Shell Test 1.5 x Class rating, Seat Test 1.1 x Class rating |
| Seat Leakage | Bubble-tight zero leakage (API 598 metal-to-metal leakage limits compliant) |
| Disc Design | Swivel plug-type disc as standard (throttling or regulating profile available); Stellited faces |
| Stem Design | Rising stem (OS&Y), non-rotating stem with heavy-duty ACME threads, integral backseat ring |
5. Materials of Construction
| Part | Standard Material | Exotic/Special Alloys (On Request) |
|---|
| Body & Bonnet | Normalized ASTM A105 / Low-Temp Carbon Steel A352 LCB/LF2 / Cast Steel A216 WCB | Alloy Steel ASTM A217 WC6 / WC9 / C12A, SS316 CF8M |
| Swivel Plug / Disc | ASTM A105/WCB with 13% Cr (Trim 8) / Stellited disc face (API Trim 5) | Solid CF8M / Duplex SS / Inconel clad plug |
| Seat Rings | Forged Carbon Steel A105 with Stellite 6 hardfacing overlay (min 2mm thickness) | SS316 with Stellite overlay, Threaded or Welded seat rings |
| Stem | Stainless Steel ASTM A276 Type 410 (13% Cr hardened & tempered) / SS316 | Monel K500, Inconel 718, SS17-4PH |
| Bonnet Gasket | Spiral Wound SS304/SS316 with Graphite filler / Soft Iron Ring Joint (RTJ) Gasket | Pressure seal metal ring gasket (Class > 900) |
| Gland Packing | High-purity die-formed flexible Graphite rings with carbon fiber braided anti-extrusion end rings | Low fugitive emission packing (ISO 15848-1 compliant) |
| Bolting | Studs: ASTM A193 Grade B7 / Nuts: ASTM A194 Grade 2H (zinc plated/phosphated) | ASTM A193 B8M (SS316 stud bolts) for subsea/marine |
6. Dimensions
Conforms to ASME B16.10 for face-to-face and end-to-end dimensions. Flanges conform to ASME B16.5 for RF (Raised Face) or RTJ (Ring Type Joint). Wall thickness meets API 623 / ASME B16.34 requirements. Detailed GAD drawings featuring height in full open position, bypass valve details (if requested), gear box or actuator mounting dimensions (ISO 5210), and weight lists are provided per P.O.
7. Testing & Inspection
| Test | Standard Reference | Acceptance Criteria |
|---|
| Body Hydrostatic Shell | API 598 / ISO 5208 | 1.5 x Class Rated Pressure (e.g. 225 bar for Class 900 WCB), 60-120s hold, zero visible leakage |
| High Pressure Seat | API 598 / ISO 5208 | 1.1 x Class Rated Pressure (e.g. 165 bar for Class 900 WCB), zero seat leakage over test duration |
| Backseat Test | API 598 | 1.1 x Class Rated Pressure, verified at stem-bonnet backseat contact, zero packing leak |
| Low Pressure Seat Air | API 598 | 6 bar air pressure, 60s hold, zero bubbles/leakage |
| NDT & Visual | ASME V / MSS SP-55 | 100% Radiography (RT) on casting critical areas, MPI/DPT on machined surfaces, PMI check |
8. Design Standards & Codes
| Code/Standard | Description |
|---|
| API 623 / BS 1873 | Steel Globe Valves -- Flanged and Butt-Welding Ends (heavy-duty refinery code) |
| ASME B16.34 | Valves -- Flanged, Threaded, and Welding End (master pressure-temp standard) |
| ASME B16.5 / B16.47 | Pipe Flanges and Flanged Fittings (dimensional standards) |
| ASME B16.10 | Face-to-Face and End-to-End Dimensions of Valves |
| IBR (Form III-C) | Indian Boiler Regulations (steam-service certifications and approvals) |
9. Documentation & Certification
| Deliverable | Details / Status |
|---|
| Material Test Certificates | EN 10204 3.1 Mill Certificates with full chemical & mechanical heat traceability |
| IBR Form III-C | Official IBR test and inspection certificate signed by Boiler Inspector (standard for steam) |
| Pressure Test Reports | Hydrostatic shell, seat, and backseat test reports witnessed by QC engineers |
| NDT Reports | Radiography (RT), Magnetic Particle (MPI), Dye Penetrant (DPT), and Ultrasonic (UT) certificates |
10. General Notes
- Globe valves are highly suited for throttling and regulating flow service, designed with robust seat-to-plug contact profiles.
- Stellite 6 hardfacing on discs and seat rings guarantees excellent resistance to high-velocity superheated steam erosion.
- Valves are designed with IBR Form III-C certification as standard, completely approved for thermal power plant steam loops.
- Valves are designed for fugitive emission compliance, satisfying ISO 15848-1 Class B leakage requirements.
11. Contact & Enquiry
