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China Ceramic Globe Valve Manufacturers and Suppliers - Erosion Resistant Flow Control Solutions from Factory
Applicable Conditions
- Precise flow regulation
- Multi-stage pressure reduction
- Noise reduction applications
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
- 🏭Coal Chemical Industry: Black and grey water flow control valve
- ⚗️Silicon Chemical Industry: Chlorosilane flow control; reduction tail gas regulation
- 🧪Salt Chemical Industry: Particle-laden hydrochloric acid and sulfuric acid solutions
- 🔥Waste Incineration Power Plants: Limestone slurry atomization flow control valve
Frequently Asked Questions (FAQ)
What are the main applicable conditions for a ceramic globe valve?
Ceramic globe valves are primarily used for precise flow regulation, multi-stage pressure reduction, and noise reduction applications in demanding industrial environments.
Which ceramic material offers the best corrosion resistance for aggressive acids?
ZrO₂ and 99.9% Al₂O₃ both demonstrate excellent corrosion resistance (Grade A) against most acids including HCL, H₂SO₄, and HNO₃. SiC also performs consistently well across nearly all tested media and temperatures.
What does the corrosion rating "A", "B", and "C" mean in the reference table?
Grade A (≤ 0.1 mmg/cm²/day) means negligible corrosion and is recommended for use. Grade B (0.1–0.3 mmg/cm²/day) indicates slight corrosion and should be used with caution. Grade C (≥ 0.3 mmg/cm²/day) means significant corrosion and is not recommended. "--" indicates intense corrosion beyond measurable limits.
What industries are ceramic globe valves most commonly used in?
Ceramic globe valves are widely applied in coal chemical industries (black/grey water control), silicon chemical industries (chlorosilane and tail gas regulation), salt chemical industries (corrosive slurry handling), and waste incineration power plants (limestone slurry atomization).
How does Y-ZrO (Y-TZP) compare to Al₂O₃ in mechanical performance?
Y-ZrO (Y-TZP) offers significantly higher flexural strength (1150 MPa) and fracture toughness (10–12 MPa√m) compared to 99 Al₂O₃ (450 MPa flexural, 4.5 MPa√m toughness), making it more suitable for high-impact and high-stress applications.
What is the flow coefficient (Cv) of a DN100 ceramic ball valve with an O-type ball core?
According to the Flow Characteristic Sheet, a DN100 ceramic ball valve with an O-type ball core has a flow coefficient of 456. For more precise flow control, V-type cores (V60°: 289, V45°: 192, V30°: 128) are available for the same DN100 size.