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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 of ball valves features a round hole in the ball, which aligns directly with the body's flow channel when opened, offering a high flow capacity. Compared to plug valves, it has a smaller structural size, lighter weight, and a self-cleaning function between the plug and seat, making it ideal for handling viscous, fibrous media, and media containing suspended solid particles. The valve exhibits low thermal expansion impact and excellent sealing performance, making it widely used in industries such as petrochemical, metallurgy, chemical fiber, pulp and paper, pharmaceuticals, and hydroelectric power stations.
Key Features:
- **Compact Structure**: Small volume and lightweight, making it easy to install and maintain.
- **Smooth Flow Channel**: Low flow resistance and pressure drop, allowing for high flow rates.
- **Strong Anti-Wear Performance**: The ball is coated with hard alloy, and the seat sealing surface is welded with hard alloy overlay, ensuring durability.
- **Fire-Safe and Anti-Static**: Complies with API 607 standards and includes an anti-static device for enhanced safety.
**Main Technical Parameters of the Body:**
| Parameter | Specification |
|-------------------------|-------------------------------------------------------------------------------|
| Body Type | Two-piece or 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°C to 250°C |
| Bonnet – High Temperature Type | 250°C to 525°C |
| Packing | PTFE, flexible graphite, nickel-based wire-reinforced flexible graphite |
**Main Technical Parameters of the Trim:**
| Parameter | Specification |
|------------------------------|-------------------------------------------------------------------------------|
| 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 control valve is suitable for applications requiring remote control of process parameters such as flow, pressure, temperature, and liquid level for gases, liquids, and corrosive media. It is an essential component in industrial systems where reliability, efficiency, and safety are critical.
[Image: API Certified High Performance Pneumatic Single Seat Control Valve]
[Image: API Certified High Performance Pneumatic Single Seat Control Valve]
[Image: API Certified High Performance Pneumatic Single Seat Control Valve]