Electric Resilient-Seated Slurry Knife Gate Valve
Automated, Zero-Leakage Precision for Abrasive Slurries
The Electric Resilient-Seated Slurry Knife Gate Valve is the advanced isolation and control solution for systems handling highly abrasive, high-solids media such as mining slurries, thick sludge, coal ash, and chemical processing fluids.
This valve’s critical feature is the replaceable, specialized rubber seat/liner, which ensures a guaranteed, bi-directional Zero Leakage seal when fully closed. The integrated Electric Actuator provides consistent, high-torque thrust to reliably cut through and seal against concentrated slurries. It also enables precise positional control (throttling) and remote automation, making it the superior choice for continuous processes and accurate batching systems where reliability and automated operation are essential.
Key Features & Reliability Advantages
| Feature Category | Technical Detail | Core Operational Benefit |
| Operation Type | Electric Actuator | Provides high thrust and precise modulation for controlled dosing, throttling, and reliable shut-off against 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 $0.25text{MPa}$ | 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 | Electric | 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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