Electric-hydraulic Balance Caged Control Valve type Globe
Description
ELECTRO-HYDRAULIC BALANCED SLEEVE GLOBE CONTROL VALVE (STRAIGHT-THROUGH DESIGN)
Model: EHA-BSG-S-24-600 | Size: 24″ (DN600) | Rating: Class 600LB (PN100)
| Parameter | Specification |
|---|---|
| Valve Type | Straight-Body Globe Control Valve w/ Balanced Sleeve Trim |
| Flow Path | Linear Straight-Through (0° Flow Deflection) |
| Actuation System | Electro-Hydraulic Regulating Actuator (Dual-Action) |
| Body Design | Standard Globe Pattern (Vertical Flow Path) |
| Trim Technology | Balanced Sleeve w/ Multi-Stage Anti-Cavitation Cage |
| Flow Characteristic | Selectable: Linear/Equal Percentage/Modified Parabolic |
| Body Material | ASTM A217 Gr. WC9 (Cr-Mo Steel) |
| Trim Materials | Sleeve: 17-4PH SS • Stem: 316L SS HVC • Seat: Stellite 6 |
| Pressure Rating | ASME B16.34 Class 600LB |
| Temperature Range | -45°C to +540°C |
| End Connection | RF Flange (ASME B16.47 Series B) |
| Face-to-Face | 1,780 mm (ASME B16.10 Table 5) |
| Leakage Class | ANSI/FCI 70-2 Class IV (Metal Seat Class V) |
| C<sub>v</sub> Range | 1,950 – 11,200 (Trim Dependent) |
| Actuator Model | EHA-48K-DUAL |
| Output Force | 210 kN Continuous Thrust |
| Manual Override | Integrated Hydraulic Hand Pump (40:1 Ratio) |
| Control Signal | 4-20mA + PROFIBUS PA |
| Position Feedback | Redundant LVDT (0.05% Accuracy) |
| Fail-Safe Action | Spring Return (FO/FC) |
| Stroke Time | 15-70 sec (Programmable) |
| SIL Certification | SIL 3 (IEC 61508/TÜV) |
| Control Accuracy | ±0.25% Full Scale |
| Pressure Balance | 85% Unbalance Force Reduction (IEC 60534-8-4) |
| Noise Reduction | 18 dBA @ ΔP=100 bar (IEC 60534-8-3) |
| Weight | 4,100 kg (Assembly) |
| Enclosure Rating | IP68 / NEMA 4X |
| Flow Direction | Flow-Under-Plug (Standard) |
| Straight-Body Advantage | Low Flow Disturbance • Symmetrical Piping Stresses |
| Critical Dimensions | Flange OD: 1,120mm • Bolt Circle: 1,016mm • Bolts: 24×2-1/2″ |
| Actuator Height | 1,350 mm |
| Testing Standard | IEC 60534-4 • Shell Test 1.5×PN • Seat Test 1.1×PN |
| Certifications | PED Cat. IV • NACE MR0175 • TA-Luft |
| Balanced Sleeve Tech | Force Reduction • Axial Stem Movement Only • Wear Compensation |
| Anti-Cavitation | 6-Stage Cage Design (Max ΔP=140 bar) |
| Flow Capacity | K<sub>v</sub> max: 16,200 |
| Rangeability | 100:1 |
| Stem Leakage | ISO 15848-1 Class B (≤10 ppmv) |
| Hydraulic System | 210 bar Max Pressure • Fire-resistant HFDU Fluid |
| Power Supply | 480VAC/3PH/60Hz (2.8kW Steady) |
| Straight-Path Loss Coeff. | K=0.3 (Minimal Resistance) |
| Optional Features | Bellows Seal • Partial Stroke Tester • Fire-Safe API 607 |
| Factory Testing | Hydro Test • Flow Characterization • Step Response • SIL Validation |
| Warranty | 36 Months |
| Design Standard | IEC 60534 / ASME B16.34 |
| Seat Load | 38 kN @ 540°C |
| Balance Ratio | 1:0.92 (IEC 60534-8-4) |
| Delivery Includes | Valve Assembly • Actuator • Gasket Kit • IEC Test Report • Dimensional Drawing |
STRAIGHT-BODY PERFORMANCE DATA
| Characteristic | Value |
|---|---|
| Hysteresis | <0.1% |
| Flow Coefficient | C<sub>v</sub> = 11,200 (Full Open) |
| Pressure Recovery | F<sub>L</sub> = 0.88 |
| Rated Flow | 45,000 m³/h Water @ 10 bar ΔP |
| Stem Guidance | Dual Bushings (≤0.04mm Runout) |
| Seat Alignment | ±0.1° Angular Tolerance |
Design Footnotes:
-
Straight-Flow Benefit: Reduced turbulence & erosion in high-velocity applications
-
Flow Direction: Standard = Flow-under-plug (reverse flow available)
-
Sleeve Clearance: 8-12μm guided fit for frictionless operation
-
Actuator Sizing: 25% larger than angle design for equivalent C<sub>v</sub>
-
Face-to-Face: Complies with ASME B16.10 Table 5 (Globe valves straight pattern)
Straight-Body vs. Angle Design Comparison
| Feature | Straight-Body | Angle Design |
|---|---|---|
| Flow Path | 0° deflection | 90° deflection |
| Pressure Drop | Lower (K=0.3) | Higher (K=1.8) |
| Installation Space | Longer face-to-face | Compact |
| Erosion Resistance | Superior for slurries | Moderate |
| Actuator Sizing | Larger thrust required | Smaller thrust |
*Engineered for high-precision control in power plant feedwater, refinery crude lines, and slurry services where straight flow paths are mandated. FEA stress analysis available per ASME FFS-1.*
