ASTA P533 and P543 are single-seat two-way high-temperature control valves controlled by an electric/pneumatic actuator. They are designed for precise remote control or shutoff of the working medium flow. The valve is used in high-temperature process systems.
| Series | P533 | P543 |
|---|---|---|
| Nominal diameter DN | 15 – 200 | |
| Nominal pressure PN | 40 bar | |
| Temperature of working medium | From -40 °C to 350 / 425 °C | From -60 °C to 350 / 425 °C |
| Working medium | Steam, water, compressed air, petroleum products and other media compatible with the valve design | |
| Control characteristics | Linear / equal percentage / shut-off | |
| Control range | 30:1 | |
| Capacity, Kvs | 1.0 – 400 m3/h | |
| Pressure compensation | Unbalanced by pressure | |
| Tightness class | III by GOST 9544-2015 | |
| Connection type | Flanged according to GOST 33259-2015 | |
| Control type | Electric actuator / pneumatic actuator | |
| No. | Name | P533 | P543 | |
|---|---|---|---|---|
| 1 | Body | Carbon steel GS-C25 | Stainless steel CF8 | |
| 2 | Cover | Steel 20 | Steel 12Х18Н10Т | |
| 3 | Saddle | Steel 20X13 | Steel 12X18N10T | |
| 4 | Plunger | Steel 20X13 | Steel 12X18N10T | |
| 5 | Rod | Steel 20X13 | Steel 12Х18Н10Т | |
| 6 | Guide | PTFE/Bronze | ||
| 7 | Seal | PTFE/Graphite | ||
| 8 | Body seal | Graphflex | ||
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