01
China FCWV Ceramic Wheel Valve from Leading Suppliers | Durable, Fully Ceramic-Lined Design from Trusted Factory
Main Technical Parameters
| Item | Y-ZrO₂ Y-TZP | Mg-ZrO₂ M-PSZ | 90 Al₂O₃ | 95 Al₂O₃ | 99 Al₂O₃ | Si₃N₄ | SiC | Common Ceramics | Carbide Alloy | 45# Steel |
| Density g/cm³ | 6.0~6.05 | 5.72~5.74 | 3.45~3.55 | 3.6~3.75 | 3.9~3.95 | 3.2~3.33 | 3.15~3.25 | 3.0~3.5 | 14~18 | 7.8 |
| Hardness HRA/C | 87 | 85 | 90 | 90 | 92 | 92 | 94 | 50~60 | 70 | 36 |
| Flexural Strength MPa | 1150 | 900 | 350 | 370 | 450 | 1200 | 470 | 20~50 | 2000 | 804 |
| Fracture Toughness (KIC) MPa√m | 10~12 | 13~15 | 3.4 | 3.6 | 4.5 | 7 | 4 | -- | 20 | 101 |
| Compressive Strength MPa | 2000 | 1800 | 1700 | 2000 | 2200 | 2800 | -- | -- | 4000 | 2000 |
| Thermal Shock Resistance °C | 87 | 110 | -- | -- | 50 | 200 | 75 | -- | 500 | 500 |
| Thermal Expansion Coefficient ×10⁻⁶/°C | 9.6 | 10 | 7.6 | 7.8 | 8.3 | 3.4 | 4 | -- | 7 | 12 |
| Modulus of Elasticity GPa | 200 | 200 | 310 | 330 | 350 | 300 | 400 | -- | 600 | -- |
| Crushing Load KN (Φ6mm) | 15 | 10 | 3.5 | 3.6 | 4 | 18 | 3.5 | -- | -- | -- |
| Using Temperature °C | <160 | <1000 | <1200 | <1250 | <1500 | <1500 | <1500 | -- | -- | <560 |
| Water Absorption | 0 | 0 | 0.02% | 0.01% | 0.00% | 0 | 0.50% | 5~10% | -- | -- |
| Corrosion Prevention | Good | Good | Good | Good | Good | Good | Good | Flooey | Good | Flooey |
* Data sources: test results or issued original documents.
| Media | Temperature | ZrO₂ | 99.9% Al₂O₃ | SiC | Si₃N₄ | Graphite | PTFE | Fluororubber | SS304 | SS316 | HC |
| 20% HCL | 60°C | A | A | A | B | A | A | A | C | C | B |
| 20% HCL | 95°C | A | A | A | C | A | A | A | -- | -- | C |
| 90% H₂SO₄ | 60°C | A | A | A | A | A | A | A | C | C | B |
| 90% H₂SO₄ | 95°C | A | A | A | B | A | A | A | C | C | C |
| 60% H₃PO₄ | 60°C | A | A | A | C | A | A | A | C | C | A |
| 60% H₃PO₄ | 95°C | A | A | A | C | A | A | A | C | C | A |
| 10% HF | 60°C | C | B | A | A | A | A | A | C | C | B |
| 46% HF | 95°C | C | C | A | C | A | A | A | -- | -- | C |
| 60% HNO₃ | 60°C | A | A | A | C | B | A | A | A | A | C |
| 60% HNO₃ | 95°C | A | B | A | C | B | A | A | B | B | C |
| 30% NaOH | 60°C | A | B | A | B | A | A | A | A | A | A |
| 30% NaOH | 95°C | B | B | A | C | A | A | A | A | B | A |
A≤ 0.1 mmg/cm²/day: Can be ignored or has no corrosion — recommended for use.
B= 0.1~0.3 mmg/cm²/day: Slight or very minor corrosion — use with caution.
C≥ 0.3 mmg/cm²/day: Significant corrosion — not recommended for use.
--Intense corrosion, to the extent that measurement is not possible.
| Core Specifications | O-type Ball Core | V60° Ball Core | V45° Ball Core | V30° Ball Core |
| DN15 | 10 | 7 | 4 | 3 |
| DN20 | 18.2 | 12 | 8 | 5 |
| DN25 | 29 | 18 | 12 | 8 |
| DN32 | 47 | 30 | 20 | 13 |
| DN40 | 73 | 46 | 31 | 21 |
| DN50 | 114 | 72 | 48 | 32 |
| DN65 | 181 | 115 | 76 | 51 |
| DN80 | 292 | 185 | 123 | 82 |
| DN100 | 456 | 289 | 192 | 128 |
| DN125 | 712 | 452 | 300 | 201 |
| DN150 | 1025 | 650 | 432 | 289 |
| DN200 | 1822 | 1156 | 769 | 514 |
Frequently Asked Questions
QWhat are the main advantages of Y-TZP (Yttria-stabilized Zirconia) ceramic compared to alumina ceramics?
Y-TZP ceramic offers significantly higher flexural strength (1150 MPa) and superior fracture toughness (10–12 MPa√m) compared to alumina ceramics (Al₂O₃), which typically range from 350–450 MPa in flexural strength. This makes Y-TZP ideal for high-stress and impact-prone applications where alumina may crack or fail.
QWhich ceramic material has the best resistance to hydrofluoric acid (HF)?
Based on the anti-corrosive performance reference table, SiC (Silicon Carbide) achieves a Grade A rating for both 10% HF at 60°C and 46% HF at 95°C, making it the most suitable ceramic material for hydrofluoric acid environments. ZrO₂ and Al₂O₃ are rated C under HF conditions and are not recommended.
QWhat is the maximum operating temperature for 99 Al₂O₃ ceramic components?
99 Al₂O₃ (99% Alumina) ceramic can withstand operating temperatures of up to 1500°C, the same as Si₃N₄ and SiC. This high-temperature capability makes it suitable for demanding thermal applications such as furnace components, high-temperature seals, and industrial kiln furniture.
QHow does the flow capacity of an O-type ball core compare to a V30° ball core in a ceramic ball valve?
The O-type ball core provides the highest flow capacity among all core types. For example, at DN200, the O-type core has a flow coefficient of 1822, while the V30° core is only 514 — approximately 3.5 times less. The V-type cores are designed for precise flow regulation, while the O-type is optimized for full-bore, high-flow applications.
QIs ZrO₂ ceramic suitable for use in strong alkali environments such as NaOH solutions?
ZrO₂ performs well in 30% NaOH at 60°C, rated Grade A (no significant corrosion). However, at 95°C, its rating drops to Grade B, indicating slight corrosion. It can generally be used in alkali environments at moderate temperatures, but caution is advised at elevated temperatures. PTFE and SiC maintain Grade A across both conditions and may be preferred for high-temperature alkali service.
QWhy is SiC ceramic preferred for high-hardness and high-temperature applications despite its lower fracture toughness?
SiC (Silicon Carbide) offers the highest hardness (HRA 94) among all listed ceramics and maintains excellent performance at temperatures up to 1500°C. Although its fracture toughness (4 MPa√m) is lower than ZrO₂, its exceptional hardness, low thermal expansion coefficient (4×10⁻⁶/°C), and outstanding corrosion resistance make it ideal for wear-resistant, high-temperature, and chemically aggressive applications such as mechanical seals, pump components, and nozzles.