The Manual Ceramic Flanged Knife Edge Gate Valve is specially engineered for severe-duty applications involving highly abrasive, corrosive, or high-solid-content media. Featuring a full ceramic lining and a manually operated design, this valve ensures reliable flow isolation with extended service life in challenging industries such as mining, power generation, and chemical processing.
Key Features
Valve Size: DN50 to DN600 (2″ to 24″)
Operation: Manual (Handwheel or Gear-operated)
Design Type: Knife-edge gate valve with flanged ends
Body Material: WCB / SS304 / SS316 with ceramic lining
Gate Material: SS304/316 or ceramic-coated alloy
Seat Material: High-purity Alumina (Al₂O₃) or Zirconia (ZrO₂)
Connection Standard: ANSI, DIN, or JIS flanges
Flow Direction: Unidirectional or Bidirectional available
Sealing Type: Replaceable ceramic seat rings for bubble-tight shut-off
Technical Specifications
| Parameter | Value |
|---|---|
| Pressure Rating | PN10 / PN16 / ANSI 150LB |
| Temperature Range | Up to 250°C (depending on seal material) |
| Leakage Standard | Zero leakage (per MSS-SP-81) |
| Face-to-Face Standard | Manufacturer standard / EN 558 |
| Handwheel Options | Rising stem / Non-rising stem |
Advantages of Manual Ceramic Knife Edge Gate Valve
✅ High Abrasion Resistance: Ceramic liners provide unmatched durability in slurry and particle-laden media
✅ Corrosion Protection: Ideal for aggressive chemical environments
✅ No External Power Required: Manual actuation is simple and reliable
✅ Cost-Effective: Lower initial and maintenance costs compared to automated versions
✅ Easy Maintenance: Replaceable seat and gate components minimize downtime
Applications
Mining & Metallurgy: Tailings, slurry pipelines, ore pulp
Thermal Power Plants: Bottom ash, fly ash, and FGD systems
Chemical Processing: Acidic or alkaline slurry flows
Cement Industry: Dry powders, gypsum slurry
Pulp & Paper: Fibrous stock with sand or grit
Coal Processing: Dense media systems, magnetite slurry
Product Configuration Options
Gate Hard Coating: Optional tungsten carbide or ceramic overlay
Flange Standards: ANSI Class 150, DIN PN10/PN16, JIS 10K
Bonnet Options: Open frame or enclosed bonnet with stem cover
Purge Ports: For flushing the sealing area and preventing clogging
Actuator Ready: Can be upgraded to pneumatic/electric in the future
Manufacturing & Quality Control
Each valve is subjected to:
100% pressure testing
Material certification (EN 10204 3.1)
Seat leakage and stroke travel tests
Dimensional inspection per ISO and ANSI standards
Available with CE, ISO 9001, and other export certifications.
Why Choose This Manual Ceramic Knife Gate Valve?
🧱 Built for abrasion – handles high solid content with minimal wear
🛠️ Simple and robust manual control – no actuator needed
💡 Designed for harsh industrial environments
🧩 Modular design for easy repair and long lifecycle
