Pressure balanced cage control valve that achieves IEC Class V seat leakage performance.
- Valve size is 6B to 24B
- Achieves IEC Class V seat leakage performance
- Certified as SIL3-capable by the U.S. firm exida. (Actuator is valid for combination with model PSA_ _ single-acting controller.)
| Structural drawing | Image
|
|---|---|
| Valve type | Low leakage Pressure Balanced Cage type Control Valves |
| Model No. | AC2_ _ _ |
| Size | 6 in. to 24 in. |
| Pressure rating | JIS10K to 30K ANSI/JPI 150 to 600 |
| End connection | Flanged : RF, RJ Welded : BW |
| Body material | SCPH2 SCS13A/14A |
| Trim material | A351CF8M A351CF8M with CoCr-A SCS14A, SCS14A with CoCr-A |
| Temperature range | -196 to 400°C |
| Leakage performance | Class V |
| Cv range | 179 to 5820 |
| Range ability | 50:1 (option 75:1) |
| Application | ・Flexible-seat structure ・General-use process of middle and large diameter piping for petrochemical and chemical plant |
| Option | Low emission gland packing |
A wide range of material specifications
Products can be provided by using different materials for valve stems - e.g., carbon steel is generally used with water, steam, and fuel oil; and high corrosion resistant stainless steel that is essential for controlling corrosive fluids.
Corresponding to service
The excellent anti-cavitation performance of these cage valves plays an essential role in controlling fluids at high temperatures and under high differential pressures. Optional specifications can be applied to reduce aerodynamic noise produced by steam and gas.
Excellent seat leakage performance
Metal sheet tight shut (class V) and soft sheet tight shut (class VI) are available.
Excellent external leakage prevention performance
A bellows seal can be added to valve stems. Increasingly sought-after specifications for gland packings can be applied to comply with fugitive emission regulations of volatile organic compounds.
High control performance
High control performance is achieved by a combination of wide rangeability and a smart valve positioner.
The original internal valve structure adopted by azbil essentially eliminated the shortcomings of conventional double-seated control valves that suffered from reversal of fluid reaction force, thereby achieving stable control.
