BS1873 Flange Globe Valve: Heavy-Duty Industrial Workhorse for Extreme Service
Uncompromised Performance Under Pressure Engineered to rigorous British Standard BS1873, this industrial-grade flange globe valve delivers fail-safe flow control in the world’s most demanding environments. Designed for critical applications where leaks, corrosion, or throttling failures are unacceptable, it combines battle-tested materials, precision engineering, and certified safety for steam, hydrocarbons, and aggressive media up to 593°C (1,100°F) and Class 2500 (PN420).
Engineered for Industrial Brutality
Robust Construction:
Body Materials: ASTM A216 WCB (Carbon Steel) / ASTM A217 WC6/WC9 (Chrome-Moly Alloy) / ASTM A351 CF8M (316SS)
Pressure Boundary: Rated for ASME Class 150 to Class 2500 (PN16-PN420), with Pressure Seal Bonnets above Class 600
Stem & Trim: 13Cr Martensitic Stainless Steel (A182 F6a) / Stellite 6 Hardfaced Seats / Anti-Blowout Stem Design
Technical Specifications: BS1873 Flange Globe Valve
(Fully Compliant with British Standard 1873)
Parameter | Specification |
Design Standard | BS 1873 |
Body Material | Carbon Steel (ASTM A216 WCB/WCC) / Alloy Steel (ASTM A217 WC6/WC9) / Stainless Steel (A351 CF8/CF8M) |
Pressure Rating | Class 150 to Class 2500 (ASME) / PN16 to PN420 (EN) |
Temperature Range | -29°C to 425°C (WCB) / -46°C to 593°C (Alloy) / -196°C to 700°C (SS) |
Valve Size (DN) | DN 15 to DN 600 (½" to 24") |
End Connection | Flanged (ASME B16.5 RF/FF, EN 1092-1 Type 01/02/05) |
Face-to-Face | ASME B16.10 / EN 558-1 Series 1 |
Seat & Disc | 13% Cr Steel (Std.) / Stellite 6 (Hardfaced) / SS316 (Corrosion Resistant) |
Stem Material | A182 F6a (13Cr) / A182 F304/F316 (SS) / A182 F91 (High-Temp Alloy) |
Bonnet Type | Bolted Bonnet (Std.) / Pressure Seal (Class 600+) |
Packing | Flexible Graphite (Std.) / PTFE (Cryogenic) / Fire-Safe Graphite (API 607) |
Gear Operator | Optional: Bevel Gear (90:1 Ratio) for Torque Reduction >80% |
Leakage Class | Class IV (Std. per BS EN 12266-1) / Class VI (Soft Seat Option) |
Fire Safe | API 607 / ISO 10497 Certified (Optional) |
Testing Standard | API 598 / EN 12266-1 (Shell Test: 1.5x PN; Seat Test: 1.1x PN) |
Intelligent Design Features:
Bolted Bonnet: Enables in-field maintenance without full system shutdown
Bevel Gear Operation: Reduces operating torque by 90% (1:90 ratio) for large-scale valves (DN150+)
Fire-Safe Compliance: Optional API 607/ISO 10497 certification with graphite-metal sealing
Backseat Function: Live packing replacement capability during operation
Precision Where It Matters
Superior Throttling: Linear/equal percentage flow characteristics for ±1% accuracy
Zero-Leakage Shutoff: EN 12266-1 Class VI sealing with elastomeric seats (optional)
