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China Suppliers Factory FCCV Unlined Hard Ceramic Ball Valve for Corrosive Media and Abrasive Slurries
⚙️ 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 — No / negligible corrosion, recommended
B = 0.1~0.3 mmg/cm²/day — Slight corrosion, use with caution
C ≥ 0.3 mmg/cm²/day — Significant corrosion, not recommended
-- Intense corrosion — measurement 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
Q What is the maximum operating temperature of the FCCV unlined hard ceramic ball valve?
The FCCV unlined hard ceramic ball valve features a ceramic-to-ceramic main seal combined with a graphite auxiliary seal, enabling leak-free operation at temperatures up to 500°C. Certain ceramic materials such as 99 Al₂O₃, Si₃N₄, and SiC can withstand temperatures up to 1500°C in appropriate configurations.
Q What connection standards are available for the ceramic ball valve?
The 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, making it suitable for a wide range of industrial piping systems.
Q Which ceramic material is recommended for handling highly corrosive acids?
For most strong acid environments such as HCL, H₂SO₄, H₃PO₄, and HNO₃, both ZrO₂ (Y-TZP) and 99.9% Al₂O₃ achieve an "A" rating (≤ 0.1 mmg/cm²/day), indicating negligible corrosion. SiC also performs excellently across nearly all listed media, including HF, making it the top choice for hydrofluoric acid applications.
Q How does the full-bore passage design benefit the process system?
The full-bore passage design ensures that the inner diameter of the valve matches the pipeline diameter, which minimizes pressure drop across the valve. It also prevents clogging or bridging when handling media containing solid particles, fibers, or abrasive slurries, significantly improving system efficiency and reducing maintenance frequency.
Q What ball core types are available and how do they affect flow control?
Four ball core types are available: O-type (full bore, maximum flow), V60°, V45°, and V30° (progressively reduced flow capacity). The V-type cores provide characterized flow control suitable for throttling and proportional control applications. For example, a DN50 O-type core offers a flow coefficient of 114, while the V30° variant offers 32, allowing precise selection based on process requirements.
Q In which industries is the FCCV ceramic ball valve most commonly applied?
The FCCV unlined hard ceramic ball valve is widely used in the steel industry (coal powder injection, desulfurization, MgO handling), pneumatic conveying systems (sand, cement, ore, glass particles), and power generation plants (flue gas dust and abrasive ash handling). Its superior hardness and wear resistance make it ideal for any environment where conventional metal valves suffer rapid degradation.