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China FAAV Ceramic A Valve: Leading Suppliers and Factory for Durable and High-Performance Solutions
📊 Main Technical Parameters
| Item |
Y-ZrO 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.
🛡️ Anti-Corrosive Performance Reference Table
✔ 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.
| 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 |
⚙️ Flow Characteristic Sheet of Ceramic Ball Valve
| 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
🔹 What is the difference between Y-TZP and M-PSZ zirconia ceramic materials?
Y-TZP (Yttria-stabilized Tetragonal Zirconia Polycrystal) offers higher density (6.0–6.05 g/cm³) and superior flexural strength (1150 MPa), making it ideal for high-stress mechanical applications. M-PSZ (Magnesia Partially Stabilized Zirconia) features slightly better fracture toughness (13–15 MPa√m) and higher thermal shock resistance (110°C), making it more suitable for environments with thermal cycling demands.
🔹 Which ceramic material is best suited for high-temperature applications?
For high-temperature environments, 99 Al₂O₃, Si₃N₄, and SiC are all rated for use up to 1500°C, giving them the widest usable temperature range among the listed materials. If thermal shock resistance is also critical, Si₃N₄ stands out with a thermal shock resistance of 200°C — the highest among ceramic options.
🔹 How does ZrO₂ perform in corrosive chemical environments compared to stainless steel?
ZrO₂ demonstrates excellent corrosion resistance (Grade A) across most acids including HCl, H₂SO₄, H₃PO₄, and HNO₃, as well as alkaline NaOH solutions. In contrast, SS304 and SS316 stainless steel show significant corrosion (Grade C) under many of the same conditions, especially with HCl and H₂SO₄. ZrO₂ is therefore strongly recommended in chemically aggressive process environments where stainless steel would fail.
🔹 What does the V-type ball core designation (V60°, V45°, V30°) mean in ceramic ball valves?
The V-type designation refers to the angle of the V-shaped notch cut into the ball core, which determines the flow control characteristic. A larger angle (V60°) allows a higher flow coefficient (Cv), while a smaller angle (V30°) provides finer, more precise flow throttling. The O-type ball core has a full circular bore and offers the highest Cv values, best suited for full on/off service.
🔹 Is SiC (Silicon Carbide) resistant to hydrofluoric acid (HF)?
Yes. SiC achieves Grade A corrosion resistance against both 10% HF at 60°C and 46% HF at 95°C, making it one of the best-performing materials in fluoride-containing environments. ZrO₂ and most alumina-based ceramics rate Grade C under HF exposure and are not recommended for such applications.
🔹 How do I select the right ceramic ball valve size based on the flow characteristic sheet?
Valve sizing is based on the required flow coefficient (Cv) for your process. Identify the pipe nominal diameter (DN) matching your pipeline, then select the ball core type that provides the Cv value closest to your calculated process requirement. For example, a DN50 O-type valve offers Cv = 114, while a DN50 V30° valve offers Cv = 32 for more precise control. Always match the ball core angle to your control resolution needs.