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China Suppliers Factory FCCV Unlined Hard Ceramic Ball Valve for Corrosive Media and Abrasive Applications
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 ≤ 0.1mmg/cm²/day: Can be ignored or has no corrosion, recommended for use.
B = 0.1~0.3mmg/cm²/day: Slight or very minor corrosion, use with caution.
C ≥ 0.3mmg/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)
What is the maximum operating temperature of the FCCV unlined hard ceramic ball valve?
The FCCV unlined hard ceramic ball valve uses 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 and SiC can withstand even higher temperatures up to 1500°C in specific configurations.
What connection standards are available for this ceramic ball valve?
The valve supports multiple connection options including internal thread, butt weld, and flange connections. Available international standards include DIN, ANSI, API, and JIS, making it compatible with a wide range of industrial piping systems worldwide.
How does the ceramic ball valve compare to traditional metal valves in terms of wear resistance?
The high-strength ceramic ball and seat offer significantly superior abrasion resistance compared to traditional metal valves. For example, the hardness of ceramic materials such as SiC reaches HRA 94, far exceeding 45# steel at HRA 36. This translates to a much longer service life in abrasive media applications.
Which ceramic material is best suited for highly corrosive media?
ZrO₂ (Y-TZP), 99.9% Al₂O₃, and SiC all demonstrate excellent corrosion resistance (Grade A) against most strong acids including HCL, H₂SO₄, H₃PO₄, and HNO₃ at elevated temperatures. SiC in particular shows the broadest resistance profile across nearly all tested media, including HF acid where ZrO₂ rates Grade C.
What are the main application industries for the FCCV unlined hard ceramic ball valve?
This valve is widely used in the steel industry for coal powder injection, hot metal desulfurization, and silica/MgO handling; in gas and pneumatic conveying systems handling sand, glass particles, cement, ore, and dust; and in power plants for flue gas dust handling and abrasive ash systems. It is ideal wherever conventional alloy valves fail due to abrasion or high temperatures.
What ball core types are available and how do they affect flow performance?
Four ball core types are available: O-type (full-bore), V60°, V45°, and V30°. The O-type provides the highest flow capacity — for example, DN100 delivers a flow coefficient of 456 — while V-notch designs (V60°, V45°, V30°) progressively reduce flow for precise throttling control. The full-bore O-type design also minimizes pressure loss and prevents blockage in particulate or fibrous media.