Bevel Gear Resilient-Seated Slurry Knife Gate Valve
Ergonomic, Zero-Leakage Isolation for Heavy Slurries
The Bevel Gear Resilient-Seated Slurry Knife Gate Valve is the professional-grade manual isolation valve designed for high-reliability service in heavy-duty applications involving highly abrasive and erosive slurries (such as mining tailings, coal slurry, and thick sludge).
This valve’s primary feature is the replaceable, special rubber seat (often lined or sleeved), which ensures a guaranteed Zero Leakage seal when fully closed. The gate is operated via a Bevel Gear Mechanism, which significantly reduces the manual force (torque) required to cycle the valve. This makes it possible for a single operator to safely and efficiently manage large-diameter valves or valves that resist closure due to heavy slurry buildup, providing precise manual control where full automation is unnecessary.
Key Features & Reliability Advantages
| Feature Category | Technical Detail | Core Operational Benefit |
| Operation Type | Bevel Gear Actuation | Reduces required operating torque, enabling the safe, easy, and ergonomic manual operation of large-bore valves handling high-density slurries. |
| Sealing Security | Zero Leakage (Tight Shut-off) | Achieves absolute isolation when fully closed, guaranteed by the resilient, specially formulated rubber seat. |
| Wear Resistance | Special Replaceable Rubber Seat/Liner | The seat features an embedded reinforcement ring for superior abrasion resistance and long life, ideal for high-wear service media like sand and slag. |
| Maintenance Cost | Field-Replaceable Components | Both the rubber seat and the stainless steel gate are designed to be replaceable, drastically reducing long-term repair costs and downtime. |
| Low-Pressure Design | Pressure Rating $0.25\text{MPa}$ | Optimized for handling low-pressure, high-solid-content fluids, common in thickening and dewatering processes. |
| Material Integrity | Stainless Steel Gate and Stem | Ensures high resistance to corrosion and erosion from the aggressive slurry media. |
Technical Specifications (Standard Resilient-Seated Model)
| Parameter | Specification | Notes |
| Nominal Size (DN) | DN 50 – 600 | Sizes up to 48″ also available. |
| Pressure Rating | 0.25MPa2.5 Bar / ASME Class 150 (Low Pressure) | Optimized for low-pressure, high-solid-content applications. |
| Applicable Temperature | -10℃～+120℃ | Suitable for most industrial slurry process temperatures. |
| Leakage Class | Zero Leakage (when gate is fully open or fully closed) | Bidirectional sealing performance. |
| Actuation Type | Bevel Gear | Available in Pneumatic, Electric, and Manual options upon request. |
Major Component Materials
| Component | Material |
| Body | Q235A Welded Steel + Special Rubber Lining |
| Gate | Stainless Steel (SS) |
| Stem | Stainless Steel or Stainless Iron |
| Seat | Special Rubber (Resilient, Abrasion-Resistant) |
Target Industry Applications
- Mining & Mineral Processing: Isolation of mineral slurries, tailings, and dense ore media.
- Wastewater Treatment: Reliable shut-off for raw sewage, high-solids sludge, and process lines.
- Power Plants: Handling of coal slurry and ash slurry.
- Pulp & Paper: Isolation of thick stock and fibrous process media.
- Construction: Control of mortar, cement slurry, and industrial mud.
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