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China Suppliers Factory FCCV Unlined Hard Ceramic Ball Valve - High Wear & Corrosion Resistance for Tough Environments
Structural Characteristics and Advantages
- ⚙ Three-piece floating ball structure for easy maintenance and reliable sealing.
- 🔗 Connection options: internal thread, butt weld, and flange (standards DIN/ANSI/API/JIS available).
- 🔥 Sealing design: ceramic-to-ceramic main seal with graphite auxiliary seal, ensuring leak-free operation up to 500°C.
- ⬤ Full-bore passage minimizes pressure loss and prevents blockage when handling particulate or fibrous media.
- 🛡 High strength ceramic ball and seat resist abrasion far beyond traditional metal valves.
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
| 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.
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 |
Application Fields
- 🏠 Steel industry: coal powder injection, hot metal desulfurization, silica and MgO handling.
- 💨 Gas and pneumatic conveying: sand, glass particles, cement, ore, and dust.
- ⚡ Power plants: flue gas dust handling and abrasive ash systems.
Thanks to its robust design and unlined ceramic construction, the FCCV unlined hard ceramic ball valve provides long service life, reduced downtime, and excellent cost-performance ratio in environments where conventional alloy valves fail. It is the preferred choice for industries demanding maximum reliability under abrasive and high-temperature conditions.
Frequently Asked Questions (FAQ)
Q
What makes the FCCV unlined hard ceramic ball valve different from standard metal ball valves?
Unlike standard metal ball valves, the FCCV uses a high-strength ceramic ball and seat that offer far superior abrasion resistance. The ceramic-to-ceramic sealing design with graphite auxiliary seal ensures leak-free performance at temperatures up to 500°C, making it ideal for highly abrasive and corrosive media where metal valves would wear out rapidly.
Q
What connection standards are available for the FCCV ceramic ball valve?
The FCCV ceramic ball valve supports multiple connection options including internal thread, butt weld, and flange connections. It is compatible with major international standards including DIN, ANSI, API, and JIS, ensuring easy integration into existing pipeline systems worldwide.
Q
Which ceramic material is recommended for high-temperature applications?
For high-temperature applications, 99 Al₂O₃ (alumina), Si₃N₄ (silicon nitride), and SiC (silicon carbide) are all rated for use up to 1500°C. Mg-ZrO₂ (M-PSZ) is suitable for temperatures below 1000°C, while Y-ZrO (Y-TZP) is limited to below 160°C. The choice depends on the specific operating temperature and media requirements.
Q
Is the FCCV ceramic ball valve suitable for handling slurries and fibrous media?
Yes. The full-bore passage design of the FCCV minimizes pressure loss and effectively prevents blockage when handling particulate, slurry, or fibrous media. This makes it especially well-suited for applications in the steel industry, pneumatic conveying systems, and power plants dealing with abrasive ash or dust-laden gases.
Q
How does the corrosion resistance of ZrO₂ compare to stainless steel in acid environments?
ZrO₂ (zirconia) demonstrates excellent corrosion resistance (rated A) against most acids including HCL, H₂SO₄, H₃PO₄, and HNO₃ at both 60°C and 95°C. In contrast, SS304 and SS316 stainless steel are rated C (significant corrosion) in many of these same environments. ZrO₂ is therefore a far superior choice for corrosive acid service, except in hydrofluoric acid (HF) environments.
Q
What size range is available for the FCCV ceramic ball valve?
The FCCV ceramic ball valve is available in a wide size range from DN15 to DN200. Flow coefficients (Cv) vary by ball core type — O-type, V60°, V45°, and V30° — allowing precise flow control across all sizes. For example, a DN200 O-type ball core provides a flow coefficient of 1822, while a V30° core at the same size provides 514, offering flexible selection for different process requirements.