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China Suppliers Factory FCAV Ceramic Angle Valve - High-Performance Angle-Style Globe Valve
FCAV Ceramic Angle Valve
Liquids that are both flash-prone and corrosive present particular challenges. For example, flash steam in steel valves induces both corrosion and erosion of the soft oxide layer generated by corrosion, producing damage greater than either mechanism alone. In such cases, structural ceramics with inherent corrosion and wear resistance provide an excellent solution.
The main sealing pair and the fixed circular plate seat of the ceramic angle valve are made of high-performance structural ceramic materials, providing excellent wear resistance, corrosion resistance, and erosion resistance, significantly extending the valve's service life.
With a simple and compact structure, the valve features low operating torque, is not prone to jamming, and has a self-cleaning function. There is no high-frequency vibration between the valve core and the seat, effectively avoiding the high-frequency vibration noise issue found in traditional linear stroke plunger angle valves, as well as preventing scratching and sticking between the valve core and the sealing seat.
Structural Characteristics
- Both the valve core and seat have flow channels, creating a planar seal at the edges of the valve core and seat flow channel holes. The valve core rotates relative to the seat to achieve throttling, opening, and closing of the fluid.
- The valve is quarter-turn, allowing for direct installation of quarter-turn actuators. This significantly reduces the overall dimensions compared to linear actuators, thereby reducing the valve's installation space.
- Each valve seat and valve core are paired and ground to ensure the valve's sealing performance.
- The valve core and seat are always in close contact, preventing high-frequency vibration and avoiding valve core fracture due to such vibrations.
- The valve core and seat are made of structural ceramics, and the remaining flow channels are lined with ceramics, providing excellent corrosion, wear, and erosion resistance, greatly extending the valve's service life.
- A wide spiral wound gasket is set within the mortise and tenon seal structure, ensuring zero leakage of the casing under pipeline stress or cyclic thermal stress.
- The packing box is equipped with a "live load" that maintains a constant load even under high wear conditions, ensuring long-lasting packing life.
Main Technical Parameters
Material Performance 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: 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 |
Main Applications
Media with both flashing and corrosive properties are particularly troublesome. Reducing the speed of erosive fluids and selecting valves with minimal changes in fluid direction can minimize particle impact. Ceramic angle valves have excellent erosion resistance, corrosion resistance, and cavitation resistance, enhancing valve service life and ensuring long-term stable operation.
★ Coal Chemical Industry: Black water angle valve.
★ Hydrometallurgy:
Discharge pipeline from high-pressure leaching autoclave to flash tank.
Exhaust pipeline from high-pressure leaching autoclave.
Pipeline from flash tank to adjustment tank.
Controls high-pressure autoclave pressure and slurry discharge volume.
Frequently Asked Questions (FAQ)
Q
What makes the FCAV Ceramic Angle Valve suitable for flash-prone and corrosive media?
The FCAV Ceramic Angle Valve uses high-performance structural ceramic materials for its main sealing pair and fixed circular plate seat. These ceramics provide inherent corrosion resistance, wear resistance, and erosion resistance — making them ideal for environments where flash steam and corrosive fluids would rapidly degrade conventional steel valves.
Q
How does the ceramic angle valve prevent high-frequency vibration and noise?
Unlike traditional linear stroke plunger angle valves, the FCAV Ceramic Angle Valve keeps the valve core and seat in constant close contact. This design eliminates high-frequency vibration between the two components, preventing noise, valve core fracture, and the scratching or sticking that typically occurs in conventional valve designs.
Q
What type of actuator is compatible with the FCAV Ceramic Angle Valve?
The FCAV Ceramic Angle Valve is a quarter-turn design, which allows direct installation of quarter-turn actuators. This significantly reduces the overall valve assembly dimensions compared to linear actuators, saving installation space and simplifying integration into pipelines.
Q
What industries and applications are best suited for the FCAV Ceramic Angle Valve?
The valve is particularly well-suited for the Coal Chemical Industry (e.g., black water angle valve applications) and Hydrometallurgy. Specific applications include discharge pipelines from high-pressure leaching autoclaves to flash tanks, exhaust pipelines from autoclaves, pipelines from flash tanks to adjustment tanks, and systems that control high-pressure autoclave pressure and slurry discharge volume.
Q
How is the sealing performance of the ceramic angle valve ensured?
Each valve seat and valve core are individually paired and precision-ground to guarantee sealing performance. Additionally, a wide spiral wound gasket is incorporated within the mortise and tenon seal structure, ensuring zero leakage from the casing even under pipeline stress or cyclic thermal stress conditions.
Q
Which ceramic material is recommended for the highest corrosion and wear resistance in the valve?
Based on the technical parameters, 99 Al₂O₃ and SiC offer excellent hardness (92–94 HRA), near-zero water absorption, and outstanding corrosion resistance (rated "A") across most acid and alkali media. Y-ZrO (Y-TZP) offers the best fracture toughness and flexural strength among zirconia-based options, making it suitable for high-impact and high-stress environments. The optimal material selection depends on the specific media, temperature, and pressure conditions of the application.