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China Suppliers FCCV8 Double Lining Ceramic Ball Valve - Reliable Factory Solution for Corrosive Applications
Structural Characteristics and Advantages
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Double lining, double sealing: ensures enhanced safety and corrosion protection.
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Molded PTFE lining with dovetail groove fixation: prevents peeling or detachment.
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Split-body design with minimized cavity: avoids material accumulation, reducing leakage risks.
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Ceramic flow passage: guarantees high resistance to abrasion and chemical attack, extending valve lifespan.
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Enhanced external protection: preserves the integrity of the metal outer wall, reducing maintenance costs.
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
The FCCV8 is widely used in chemical plants, salt chemical industry, pharmaceutical production, and environmental protection systems, where media are strongly corrosive and highly volatile.
With its double safety protection and advanced lining technology, the FCCV8 is a high-security ceramic valve solution, delivering unmatched durability and reliability in the harshest industrial environments.
Frequently Asked Questions (FAQ)
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What makes the FCCV8 ceramic ball valve suitable for highly corrosive environments?
The FCCV8 features a double lining and double sealing design combined with a molded PTFE lining secured by dovetail grooves. Its ceramic flow passage provides exceptional resistance to both chemical corrosion and abrasion, making it ideal for use with strongly corrosive and volatile media in chemical, pharmaceutical, and environmental protection applications.
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What ceramic materials are available for the valve's flow passage, and how do they differ?
Several ceramic materials are available, including Y-TZP (Yttria-stabilized Zirconia), M-PSZ (Magnesia-stabilized Zirconia), Al₂O₃ (90%, 95%, 99% grades), Si₃N₄, and SiC. They differ in hardness, flexural strength, fracture toughness, thermal shock resistance, and maximum operating temperature. For example, 99% Al₂O₃ offers a use temperature up to 1500°C, while Y-TZP provides superior fracture toughness of 13–15 MPa√m.
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How does the split-body design help reduce leakage risks?
The split-body design minimizes the internal cavity of the valve, which prevents the accumulation of process media inside the valve body. This significantly reduces the risk of material buildup, crystallization, and subsequent leakage — a critical advantage when handling slurries, crystallizing chemicals, or sticky fluids.
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What ball core types are available, and how do they affect flow characteristics?
The FCCV8 is available with O-type, V60°, V45°, and V30° ball cores. The O-type ball core provides the highest flow capacity (e.g., 1822 Cv for DN200), while V-type cores offer progressively reduced and more precisely controllable flow — making them suitable for throttling and proportional control applications. The V30° core provides the finest flow control.
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Which industries and applications is the FCCV8 ceramic ball valve best suited for?
The FCCV8 is specifically designed for demanding industrial environments including chemical plants, salt chemical industry, pharmaceutical production, and environmental protection systems. It excels wherever the process media is strongly corrosive, highly abrasive, or volatile — offering long service life and reduced maintenance downtime compared to conventional metal valves.
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How does the corrosion resistance of ZrO₂ and Al₂O₃ ceramics compare to stainless steel?
Based on the anti-corrosive performance reference table, ZrO₂ and 99.9% Al₂O₃ achieve an "A" rating (≤0.1 mmg/cm²/day, negligible corrosion) across most tested media including HCl, H₂SO₄, H₃PO₄, and HNO₃ at elevated temperatures. In contrast, SS304 and SS316 stainless steel frequently rate "C" (significant corrosion) or even unmeasurable corrosion under the same conditions, demonstrating the clear superiority of ceramic materials for corrosive media handling.