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API Certified High Performance Pneumatic Single Seat Control Valve
The API-certified high-performance pneumatic single-seat control valve is primarily designed for shut-off and flow control of various media. This series features a ball with a round hole, which allows for direct alignment with the body's flow channel when opened, offering high flow capacity. Compared to plug valves, it has a more compact structure, lighter weight, and self-cleaning properties between the plug and seat, making it ideal for use with viscous, fibrous, or particulate-laden media. It also exhibits low thermal expansion and excellent sealing performance, making it suitable for a wide range of industrial applications such as petrochemicals, metallurgy, chemical fiber, pulp and paper, pharmaceuticals, and hydroelectric power stations.
**Key Features:**
- **Compact Design:** Small size, lightweight, and easy to maintain.
- **Smooth Flow Channel:** Low flow resistance and pressure drop, allowing for high flow rates.
- **High Wear Resistance:** The ball is coated with hard alloy, and the seat sealing surface undergoes overlay welding for enhanced durability.
- **Fire-Safe and Anti-Static:** Meets API 607 standards and includes an anti-static device for safe operation.
**Main Technical Parameters of the Body:**
| Parameter | Description |
|-----------------------|-----------------------------------------------------------------------------|
| Body Type | Two-piece, Three-piece |
| Nominal Diameter | DN15 ~ 500 (NPS 1/2 ~ 24) |
| Nominal Pressure | PN 1.6 ~ 4.0 MPa (Class 150 ~ 600) |
| Connection Type | Flanged |
| Material | A216-WCB, A351-CF8, A351-CF8M, A351-CF3, A351-CF3M, A217-WC6, A217-WC9 |
| Bonnet (Standard Type) | -20 ~ 250°C |
| High-Temperature Type | 250 ~ 525°C |
| Packing | PTFE, Flexible Graphite, Nickel-Based Wire Reinforced Flexible Graphite |
**Main Technical Parameters of the Trim:**
| Parameter | Description |
|--------------------------|-----------------------------------------------------------------------------|
| Plug Type | O-type straight-through |
| Plug Material | A182-F304, A182-F316 |
| Seat Material (Soft Seal)| PTFE, RPTFE, PPL |
| Hard Seal | A182-F304, A182-F316 |
| Flow Characteristic | Quick Opening |
| Rated Cv Value | See Table 4 for details |
| Rated Travel | 0 ~ 90° |
| Seat Leakage Class (Soft Seal) | ANSI B16.104 Class VI |
| Hard Seal | ANSI B16.104 Class V (Class VI for special orders) |
| Treatment for Body | Plug, Ball, Seat, Stem, etc. |
This valve is widely used in systems that require remote control of process parameters such as flow, pressure, temperature, and liquid level for gases, liquids, and corrosive media. Its reliable performance and compliance with international standards make it a preferred choice in critical industrial environments.
