Product Introduction
Control valves are precision devices designed to regulate fluid flow, pressure, or temperature in industrial systems. They ensure stable process control by adjusting the flow area based on signals from controllers.
1. Core Components
- Valve Body: Available in globe, ball, butterfly, or diaphragm types.
- Actuator: Pneumatic, electric, or hydraulic actuation for precise positioning.
- Positioner: Converts control signals into mechanical movement (e.g., 4–20 mA input).
- Trim: Includes plug, seat, and stem for flow modulation.
2. Key Technical Parameters
A. Design Parameters
| Parameter | Description/Value |
|---|---|
Valve Size | ½" to 24" (DN15–DN600) |
Pressure Rating | ANSI 150–2500, PN10–PN420 |
Temperature Range | -196°C to +600°C (cryogenic to high-temp) |
Flow Coefficient (Cv) | 1–10,000 (customizable per application) |
B. Performance Parameters
- Leakage Class: ANSI Class II to VI (e.g., Class VI for bubble-tight shutoff).
- Flow Characteristic: Linear, equal percentage, or quick-opening.
- Response Time: ≤1–5 seconds (pneumatic actuators).
C. Material Specifications
| Component | Common Materials |
|---|---|
Valve Body | Carbon steel, stainless steel (SS304/316), alloy (Inconel, Hastelloy) |
Seat/Trim | Stellite, PTFE, PEEK, ceramic-coated |
Stem | SS316, 17-4PH, hardened steel |
3. Applications
- Oil & gas pipelines, refining, and petrochemicals.
- Power generation (steam, cooling systems).
- Chemical processing (corrosive fluid control).
- Water treatment and HVAC systems.
4. Standards & Certifications
- Design: ASME B16.34, API 6D, IEC 60534.
- Safety: SIL 2/3 (IEC 61508), ATEX/IECEx for explosive environments.
5. Advantages
- Precision Control: ±0.5% accuracy with digital positioners.
- Durability: Corrosion-resistant materials for harsh environments.
- Customization: Modular design for trim, actuators, and accessories.
Keywords
Control Valve
Control valves are precision devices designed to regulate fluid flow, pressure, or temperature in industrial systems. They ensure stable process control by adjusting the flow area based on signals from controllers.
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