The Pneumatic Actuator Ceramic Flanged Knife Gate Valve is an industrial-grade isolation valve engineered for extremely abrasive and corrosive media. With a ceramic-lined flow path and high-torque pneumatic actuator, this valve offers unmatched performance in mining, power plants, and chemical slurry systems.
Key Features
Valve Type: Ceramic-lined knife gate valve with pneumatic actuator
Connection Type: Flanged (ANSI, DIN, JIS available)
Body Material: Carbon steel or stainless steel with internal ceramic liners
Gate Material: Stainless steel or ceramic-coated alloy
Liner/Seat Material: Alumina (Al₂O₃) / Zirconia (ZrO₂) ceramics
Size Range: DN50 – DN600 (2″ – 24″)
Pressure Rating: PN10 / PN16 / ANSI 150LB
Temperature Range: Up to 250°C (depends on seal and actuator type)
Pneumatic Actuation Details
Actuator Type: Double-acting or spring-return pneumatic cylinder
Control Options:
Solenoid valve (24VDC / 220VAC)
Limit switches / proximity sensors
Positioner for modulating control
Manual override available
Air Supply: 0.4–0.7 MPa (4–7 bar)
Accessories: Filter regulator, quick exhaust, position indicator
Ceramic Technology Benefits
✅ Extreme Abrasion Resistance: Ceramic liners significantly extend valve life in slurry applications
✅ Corrosion Resistance: Ideal for acidic or alkaline media in chemical plants
✅ Low Maintenance: Self-cleaning design, long replacement intervals
✅ Tight Shut-off: Precision ceramic seating ensures zero leakage
✅ Stable Operation: Pneumatic actuation ensures fast, repeatable motion under heavy loads
Applications
Mining & Mineral Processing: Tailings, iron ore slurry, gold/copper slurry
Thermal Power Plants: Fly ash, bottom ash discharge systems
Desulfurization (FGD): Gypsum slurry and lime injection lines
Chemical Industry: Strong acid/alkali mixtures, solid-particle chemicals
Paper & Pulp: High-consistency pulp containing sand or fiber
Coal Washing Plants: Dense media and magnetite slurry
Technical Parameters (Example DN150)
| Specification | Value |
|---|---|
| Valve Size | DN150 (6″) |
| Body Material | WCB or SS304 with ceramic liner |
| Gate Material | SS304 with ceramic coating |
| Seat Type | Replaceable ceramic ring |
| Max Working Pressure | 1.6 MPa (16 bar) |
| Air Supply | 0.6 MPa (standard) |
| Leakage Rate | Zero leakage (per MSS-SP-81) |
| Actuator Stroke | Custom per valve size |
Options & Customization
Bonneted design for sealing slurry and preventing stem corrosion
Explosion-proof solenoid valve
Manual override gearbox for emergency control
Different actuator brands (e.g., FESTO, AIRTAC, SMC, etc.)
Wear monitoring sensors (optional for critical applications)
Why Choose Our Pneumatic Ceramic Knife Gate Valve?
🔧 Engineered for Harsh Environments
🏭 Proven in Mining, Power & Chemical Plants
⏱ Fast Actuation with Minimal Downtime
📦 Custom Sizes, Materials & Actuation Available
🌍 Export Ready – CE / ISO Certified
