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Ceramic Inflatable Butterfly Valve from China Suppliers | Durable Factory Design for Extended Service Life
🔩 Structural Characteristics
- No rotational wear between the ceramic disc and the rubber valve seat.
- Pneumatic-driven, with low torque requirements and lightweight accessories for easy maintenance.
- Ceramic disc is highly wear-resistant, corrosion-resistant, and non-polluting.
⚙️ Operating Conditions
Suitable for gas-solid particle media where high sealing performance and cleanliness are critical.
🌡️
Maximum Temperature:
180 °C
💧
Maximum Pressure:
1.6 MPa
📐
Size Range:
DN25–250 (1"–12")
🔒
Sealing Class:
≥ IV
🏆 Performance Advantages
- Extended service life (2× longer than traditional butterfly valves).
- Reliable sealing under particle-rich and clean operation requirements.
- Easy maintenance with rapid seat replacement and low actuation torque.
📊 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 |
🏭 Typical Applications
Ideal for handling particulate and bulk materials, including:
- Cement
- Silica sand
- Fly ash
- Ceramic powder
- Carbon powder
- Precious metal powders
- Battery powders
❓ Frequently Asked Questions
Q
What makes a ceramic disc butterfly valve different from a traditional butterfly valve?
Unlike traditional butterfly valves, ceramic disc butterfly valves eliminate rotational wear between the disc and the valve seat. The ceramic disc provides superior hardness, wear resistance, and corrosion resistance, resulting in a service life approximately 2× longer than conventional butterfly valves. They are also pneumatic-driven with lower torque requirements, making maintenance simpler and more cost-effective.
Q
What is the maximum operating temperature and pressure for this valve?
The ceramic disc butterfly valve supports a maximum operating temperature of 180 °C and a maximum operating pressure of 1.6 MPa. These parameters make it suitable for a wide range of industrial gas-solid particle media applications requiring high sealing performance and cleanliness.
Q
Which ceramic material is best suited for highly corrosive media?
Based on the anti-corrosive performance reference table, ZrO₂ (Y-TZP/Y-ZrO), 99.9% Al₂O₃, and SiC demonstrate excellent resistance (Grade A) against most common acids and alkalis such as HCL, H₂SO₄, H₃PO₄, and HNO₃. SiC in particular shows Grade A performance across nearly all tested media and temperatures. For HF environments, SiC is the recommended choice.
Q
What size range is available for the ceramic disc butterfly valve?
The ceramic disc butterfly valve is available in sizes ranging from DN25 to DN250 (equivalent to 1" to 12"). This wide size range ensures compatibility with most industrial pipeline systems handling particulate or bulk material media.
Q
What types of materials or media is this valve designed to handle?
This valve is specifically designed for gas-solid particle media requiring high sealing performance and cleanliness. Typical applications include cement, silica sand, fly ash, ceramic powder, carbon powder, precious metal powders, and battery powders. Its ceramic construction ensures zero contamination of the media during operation.
Q
How does the flow characteristic vary between different ball core types?
The flow capacity (Cv value) varies significantly depending on the ball core type. The O-type ball core provides the highest flow capacity — for example, DN200 delivers a Cv of 1822. V-type cores offer proportional flow control: V60° provides approximately 63% of O-type flow, V45° approximately 42%, and V30° approximately 28%. Selecting the appropriate core type allows precise flow regulation for different process requirements.