Chainwheel Resilient-Seated Slurry Knife Gate Valve
Safe, High-Reach, Zero-Leakage Isolation for Slurries
The Chainwheel Resilient-Seated Slurry Knife Gate Valve is the essential manual solution for safely controlling highly abrasive, low-pressure slurries in systems where the valve is mounted high above the floor or platform.
This valve’s robust design features a Special Rubber Seat and liner which ensures a reliable, Zero Leakage seal against media like mining tailings, coal slurry, and thick mud. The Chainwheel Operator allows personnel to safely stroke the gate from the ground level, eliminating the need for ladders or elevated platforms for routine manual operation. This combination provides a durable, low-maintenance, and safety-compliant solution for tall infrastructure in mining, water treatment, and heavy industrial processing.
Key Features & Safety Advantages
| Feature Category | Technical Detail | Core Operational Benefit |
| Operation Type | Chainwheel Actuation | Allows safe, ground-level operation of valves installed high above the floor, dramatically improving operator safety and accessibility. |
| 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 | Features an embedded reinforcement ring for superior abrasion resistance and long life, significantly reducing erosion from high-solids media. |
| Maintenance Cost | Field-Replaceable Components | The rubber seat and stainless steel gate are designed to be replaceable, drastically lowering long-term repair costs and minimizing downtime. |
| Low-Pressure Design | Pressure Rating 0.25MPa | Optimized for handling low-pressure, high-solid-content fluids, common in thickening and dewatering processes. |
| Ergonomics | Reduced Operating Effort | Often paired with a Bevel Gear to ensure the chain drive moves the gate smoothly with minimal torque, even on large, high-resistance valves. |
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 | Chainwheel | Available in Pneumatic, Electric, and Manual options upon request. |
Operation Guidance and Customization
- Chain Link Calculation: The required number of chain links ($M$) for operation is calculated by $M = 0.105X – 113$ ($X$ being the stem center height in mm).
- Actuator Pairing: For larger valve sizes, the chainwheel is typically attached to a Bevel Gear Operator to ensure the necessary leverage and low torque for smooth operation.
- Custom Manufacturing: This valve can be manufactured to user-specific designs and dimensions to perfectly match your piping system.
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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