Yixing Hengyuan Ceramic Technology Co., Ltd.
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Ceramic star valves are commonly used in pneumatic output systems. For pressure output systems or negative pressure output systems, ceramic star valves can uniformly and continuously supply material to the conveying pipe. To ensure the stability of the gas and solid in the pneumatic output pipe, so that the pneumatic conveying can work normally, and at the same time, it can also block the upper and lower air pressure of the unloader and play a role in air locking. Therefore, the ceramic star valve is an important component commonly used in pneumatic conveying systems.
|
Number | Specification | Unloaded volume | Minimum speed | Maximum speed |
|
1
| DN150 | 3L | 25r/min | 42r/min |
|
2
| DN200 | 6L | 25r/min | 42r/min |
|
3
| DN250 | 10L | 25r/min | 42r/min |
|
4
| DN300 | 15L | 25r/min | 42r/min |
|
5
| …… | …… | …… | …… |
| Naterial | Unit | A95% Alumina Ceramics | A97% Alumina Ceramics | A99% Alumina Ceramics | A99.7% Alumina Ceramics |
| Density | g/cm³ | 3.6 | 3.72 | 3.85 | 3.85 |
| Flexural Strength | Mpa | 290 | 300 | 350 | 350 |
| Compressive Strength | Mpa | 3300 | 3400 | 3600 | 3600 |
| Modulus of Elasticity | Gpa | 340 | 350 | 380 | 380 |
| Impact Resistance | MPam1/2 | 3.9 | 4 | 5 | 5 |
| Weibull Modulus | M | 10 | 10 | 11 | 11 |
| Vickers Hardulus | HV0.5 | 1800 | 1850 | 1900 | 1900 |
| Thermal Expansion Coefficient | 10-6K-1 | 5.0-8.3 | 5.0-8.3 | 5.4-8.3 | 5.4-8.3 |
| Thermal Conductivity | W/Mk | 23 | 24 | 27 | 27 |
| Thermal Shock Resistance | △T℃ | 250 | 250 | 270 | 270 |
| *Maximum Use Temperature | ℃ | 1600 | 1600 | 1650 | 1650 |
| Volume Resistivity at 20℃ | Ω | ≥1014 | ≥1014 | ≥1014 | ≥1014 |
| Dielectric Strength | KV/mm | 20 | 20 | 25 | 25 |
| Dielectric constant | εr | 10 | 10 | 10 | 10 |
