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China FCCV8 Double Lining Ceramic Ball Valve - Reliable Suppliers from Leading Factory for Corrosive Applications
Structural Characteristics and Advantages
- 🛡️ Double lining, double sealing: ensures enhanced safety and corrosion protection.
- 🔩 Molded PTFE lining with dovetail groove fixation: prevents peeling or detachment.
- ⚙️ Split-body design with minimized cavity: avoids material accumulation, reducing leakage risks.
- 💎 Ceramic flow passage: guarantees high resistance to abrasion and chemical attack, extending valve lifespan.
- 🔧 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)
What makes the FCCV8 ceramic ball valve more corrosion-resistant than standard metal valves?
The FCCV8 features a ceramic flow passage combined with a PTFE double lining and double sealing structure. Ceramic materials such as ZrO₂ and Al₂O₃ exhibit near-zero water absorption and excellent resistance to strong acids, alkalis, and oxidizing media, outperforming stainless steel (SS304/SS316) in most corrosive environments.
What is the purpose of the dovetail groove fixation in the PTFE lining?
The molded PTFE lining is secured using a dovetail groove structure, which mechanically interlocks the lining to the valve body. This design effectively prevents the lining from peeling, shifting, or detaching under high pressure or temperature fluctuations, ensuring long-term sealing integrity.
Which ceramic material is recommended for the highest abrasion resistance?
SiC (Silicon Carbide) offers the highest hardness (HRA 94) among the listed ceramic materials, making it ideal for highly abrasive media. Y-TZP Zirconia provides the best fracture toughness (13–15 MPa√m) and is recommended where both toughness and abrasion resistance are required.
In which industries is the FCCV8 ceramic ball valve most commonly applied?
The FCCV8 is widely used across chemical plants, salt chemical processing, pharmaceutical manufacturing, and environmental protection systems. It is specifically designed for applications involving strongly corrosive, highly volatile, or abrasive media where conventional valves fail prematurely.
How does the split-body design reduce leakage risk?
The split-body design minimizes the internal cavity of the valve, which significantly reduces dead zones where process media could accumulate. This prevents material buildup, crystallization, and blockage — all common causes of seal failure and leakage in conventional ball valves.
What do the corrosion resistance ratings A, B, and C mean in the performance table?
The ratings indicate the corrosion rate of each material in contact with a given medium: A (≤ 0.1 mmg/cm²/day) means negligible or no corrosion and is recommended for use; B (0.1–0.3 mmg/cm²/day) indicates slight corrosion and requires cautious application; C (≥ 0.3 mmg/cm²/day) means significant corrosion and the material is not recommended; "--" indicates corrosion so intense it cannot be measured.