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China Ceramic Slide Valve Suppliers - Durable Factory Design for Enhanced Erosion Resistance and Sealing Performance
Structural Characteristics
- The valve core moves linearly on the valve seat, creating a planar seal at the edge of the valve seat flow passage hole, allowing throttling, opening, and closing.
- The design minimizes flow resistance and erosion, with no sharp turns or stagnation points.
- The valve core is embedded in a metal mounting plate with ceramic to prevent breakage from clogging.
- Each valve seat and valve core are pair-ground to ensure sealing.
- The metal mounting plate has a T-slot that connects with the valve stem's T-slot, keeping the valve core floating and improving sealing performance.
- Both valve core and seat are made of structural ceramic, with ceramic-lined flow passages at the flanges for wear, corrosion, and erosion resistance.
- The valve's design significantly extends its service life (interior valve body currently cannot be lined with ceramic).
- Equipped with a "live load" that maintains a constant load under significant wear, ensuring packing longevity.
The FCSV1 ceramic slide valve features a simple and compact structure, requiring low push-pull force for opening and closing. It is resistant to jamming and flow deviation and incorporates a self-cleaning function. This valve can function both as a control valve and as an on-off valve, making it highly versatile. It is especially suitable for media containing high levels of impurities, prone to scaling, crystallization, or with high viscosity and large particles, effectively preventing clogging.
The main sealing components are made of high-performance structural ceramic, providing excellent corrosion resistance, wear resistance, and erosion resistance, significantly extending the valve's service life. The valve seat is designed to re-establish the flow channel at the center of the pipeline, ensuring fluid passes through the center of the valve. This protects both the valve body and downstream piping, dramatically increasing the operational life of the system.
The FCSV1 valve can handle slurries, gas-solid particulate media, and gas-solid-liquid three-phase media under severe erosion conditions, maintaining smooth operation, long-term sealing, and extended service life.
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 |
Corrosion Rating Legend
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
- Coal Chemical Industry: Quenching water control valve; black and grey water flow control valve.
- Salt Chemical Industry: Lime milk flow control valve in soda ash production.
- Petrochemical Industry: Catalyst particle transportation control valve.
- Ore Metallurgy: Tailings backfill, ore transportation, ore feeding, copper mine on-off and control valves.
- Waste Incineration Power Plants: Limestone slurry atomization flow control valve.
Frequently Asked Questions
1
What makes the FCSV1 ceramic slide valve suitable for highly abrasive media?
The FCSV1 valve uses high-performance structural ceramic for its core sealing components, offering outstanding wear resistance, corrosion resistance, and erosion resistance. Its linear valve core movement creates a planar seal with no sharp turns or stagnation points, minimizing flow resistance and erosion even under severe slurry or particulate conditions.
2
Can the FCSV1 valve be used as both a control valve and an on-off valve?
Yes. The FCSV1 ceramic slide valve is highly versatile and can function as both a control valve (for throttling and flow regulation) and an on-off valve (for full open/close operation). This dual capability makes it an excellent choice for a wide range of industrial process requirements.
3
Which ceramic materials are used in the valve, and how do they compare to metals?
The valve utilizes structural ceramics such as Y-ZrO₂ (Y-TZP), Mg-ZrO₂ (M-PSZ), Al₂O₃ grades (90%, 95%, 99%), Si₃N₄, and SiC. Compared to metals like 45# steel or carbide alloys, these ceramics offer significantly higher hardness (up to HRA 94), excellent corrosion prevention, zero water absorption, and superior compressive strength — greatly extending service life in aggressive environments.
4
How does the FCSV1 valve prevent clogging with viscous or particle-laden media?
The valve incorporates a self-cleaning function and a design that re-establishes the flow channel at the center of the pipeline. The valve core is embedded in a metal mounting plate with ceramic to prevent breakage from clogging. The T-slot floating connection between the valve core and stem further reduces jamming risk, making it ideal for media with high impurity content, scaling, crystallization, high viscosity, or large particles.
5
What industries and applications is the FCSV1 ceramic slide valve designed for?
The FCSV1 is designed for demanding industrial applications including coal chemical (quenching water, black/grey water), salt chemical (lime milk in soda ash production), petrochemical (catalyst particle transport), ore metallurgy (tailings backfill, ore feeding, copper mine valves), and waste incineration power plants (limestone slurry atomization control).
6
What is the "live load" feature and how does it benefit packing longevity?
The "live load" is a built-in mechanism that automatically maintains a constant load on the valve packing even as wear occurs over time. This ensures consistent sealing pressure without manual adjustment, significantly extending the service life of the packing and reducing maintenance frequency in long-term operations.