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Ceramic Inflatable Butterfly Valve from China Suppliers - Durable Design for Extended Service Life | Factory Direct
Structural Characteristics
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No rotational wear between the ceramic disc and the rubber valve seat.
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Pneumatic-driven, with low torque requirements and lightweight accessories for easy maintenance.
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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.
Max Temp 180 °C
Max Pressure 1.6 MPa
Size Range DN25–250 (1"–12")
Sealing Class ≥ IV
Performance Advantages
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Extended service life (2× longer than traditional butterfly valves).
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Reliable sealing under particle-rich and clean operation requirements.
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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
QWhat makes the ceramic disc valve different from a traditional butterfly valve?
Unlike traditional butterfly valves, the ceramic disc valve eliminates rotational wear between the disc and the rubber valve seat. This design, combined with a highly wear-resistant ceramic disc, results in a service life that is at least 2× longer than conventional butterfly valves, while maintaining superior sealing performance.
QWhat are the maximum operating temperature and pressure for this valve?
The ceramic disc valve supports a maximum operating temperature of 180 °C and a maximum pressure of 1.6 MPa, making it suitable for demanding industrial gas-solid particle media applications.
QWhich ceramic material offers the best corrosion resistance for acid media?
ZrO₂ (Zirconia) and 99.9% Al₂O₃ (Alumina) both demonstrate excellent corrosion resistance (Rating A) against most common acids including HCL, H₂SO₄, H₃PO₄, and HNO₃ at elevated temperatures. SiC also performs well across nearly all listed media. Selection should be based on specific process conditions.
QWhat size range is available for the ceramic disc valve?
The ceramic disc valve is available in sizes ranging from DN25 to DN250, which corresponds to 1 inch through 12 inches, covering a wide range of industrial pipeline requirements.
QWhat types of bulk materials is this valve suitable for?
This valve is ideal for handling a variety of particulate and bulk materials, including cement, silica sand, fly ash, ceramic powder, carbon powder, precious metal powders, and battery powders — all applications where cleanliness and reliable sealing are critical.
QHow easy is it to maintain the ceramic disc valve?
The valve is designed for easy maintenance. Its pneumatic actuator requires low torque, and the seat can be replaced rapidly without specialized tools. The lightweight accessory design further simplifies routine inspection and servicing, minimizing downtime in industrial operations.