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Ceramic Inflatable Butterfly Valve by 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.
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Maximum Temperature
180 °C
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Maximum Pressure
1.6 MPa
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Size Range
DN25–250 (1"–12")
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Sealing Class
≥ IV
Performance Advantages
⏳
Extended Service Life
2× longer than traditional butterfly valves.
2× longer than traditional butterfly valves.
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Reliable Sealing
Under particle-rich and clean operation requirements.
Under particle-rich and clean operation requirements.
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Easy Maintenance
Rapid seat replacement and low actuation torque.
Rapid seat replacement and low actuation torque.
Main Technical Parameters
Material Comparison Table
| 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 — No corrosion, recommended for use.
⚠️ B = 0.1~0.3 mmg/cm²/day — Slight corrosion, use with caution.
❌ C ≥ 0.3 mmg/cm²/day — Significant corrosion, not recommended.
— Intense corrosion, measurement 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
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What 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 seat. This design, combined with a highly wear-resistant and corrosion-resistant ceramic disc, results in a service life approximately 2× longer than conventional alternatives, while also ensuring zero contamination of the media.
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What are the maximum operating temperature and pressure for this valve?
The ceramic disc valve is rated for a maximum operating temperature of 180 °C and a maximum working pressure of 1.6 MPa. These specifications make it well-suited for demanding industrial environments involving gas-solid particle media.
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Which ceramic material offers the best overall performance for valve applications?
Based on the technical parameters table, Y-TZP (Yttria-stabilized Zirconia) and Si₃N₄ (Silicon Nitride) offer outstanding combinations of flexural strength, fracture toughness, and hardness. Y-TZP achieves a fracture toughness of 13–15 MPa√m, making it one of the toughest ceramic options. SiC offers the highest hardness (HRA 94) and excellent corrosion resistance across most media types.
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Is the ceramic disc valve suitable for handling hydrofluoric acid (HF)?
For HF media, ZrO₂ and Al₂O₃ ceramics are rated "C" (significant corrosion, not recommended), while SiC is rated "A" (no corrosion, recommended). Therefore, for applications involving HF, SiC-based ceramic components are the preferred choice. PTFE and Fluororubber auxiliary components are also rated "A" for HF resistance.
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What size range is available and what sealing class does the valve achieve?
The ceramic disc valve is available in sizes ranging from DN25 to DN250 (1" to 12"), covering a wide range of industrial pipeline requirements. It achieves a sealing class of ≥ Class IV, ensuring reliable shutoff performance even in particle-laden or demanding clean-process environments.
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What industries and materials is this ceramic valve most commonly used for?
This valve is ideal for industries that handle dry bulk solids, fine powders, and abrasive particulates. Typical applications include cement production, silica sand processing, fly ash handling, ceramic powder manufacturing, carbon powder systems, as well as precision industries dealing with precious metal powders and battery material powders where contamination control is critical.