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The bottom diverting valve is a material分流, switching, and flow control device installed at the bottom of silos, hoppers, or conveying equipment. It is widely used in powder and granular material conveying systems across industries such as building materials, mining, metallurgy, chemical processing, grain processing, and environmental protection. Its core function is to precisely direct material flow to different downstream equipment while also providing shut-off capability.
Product Definition
The bottom diverting valve is a three-way/four-way valve designed for gravity feeding or pneumatic conveying applications. By rotating or translating the internal valve core, it alters the material flow path to achieve single-inlet, multiple-outlet material distribution. Some models integrate a flow regulating mechanism, allowing simultaneous flow rate control during diversion to ensure stable operation of the conveying system.
Core Features
1. Compact Structure & Strong Adaptability
The valve body is typically constructed from carbon steel, stainless steel, or wear-resistant alloy steel. Its compact design allows direct connection to silo bottoms or conveying pipe flanges without requiring complex additional support structures. It adapts to various discharge port sizes.
2. Wear-Resistant & Durable with Excellent Sealing Performance
To address erosion and wear caused by powder and granular materials, the valve core and internal walls can be equipped with wear-resistant ceramic liners, polyurethane linings, or hardened by quenching treatment. Soft seals (e.g., rubber O-rings) or hard seals (metal-to-metal) are employed to effectively prevent material leakage and external air ingress, avoiding dust emissions and material caking due to moisture.
3. Flexible Operation & Precise Control
Three drive options are available: manual, electric, and pneumatic:
- Manual: Suitable for simple operating conditions without frequent switching; low operating cost.
- Electric: Equipped with motor and gearbox; allows remote control of valve core angle for automated diversion.
- Pneumatic: Cylinder-driven with fast response; ideal for production lines requiring high-frequency switching; can be integrated with solenoid valves into PLC control systems.
4. Easy Maintenance & Reliable Operation
The valve body features a quick-opening design, allowing access to replace wear liners and seals without complete disassembly. No complex internal transmission components result in low failure rates, and the valve is capable of withstanding harsh industrial environments with high temperatures and high dust concentrations.
Technical Parameters
| Parameter Category | Key Specifications |
| Nominal Diameter | DN150–DN1000 (non-standard sizes available upon request) |
| Applicable Material | Powders and granular materials, particle size ≤ 50mm, moisture content ≤ 15% |
| Operating Pressure | Atmospheric or slight negative pressure (-5 kPa to 0 MPa) |
| Operating Temperature | -20°C to 300°C (higher temperatures available with special materials) |
| Drive Mode | Manual / Electric (AC380V) / Pneumatic (0.4–0.6 MPa) |
| Valve Body Material | Q235 carbon steel, 304/316 stainless steel, wear-resistant alloy steel |
| Sealing Class | Dust-tightness Class 6 or above; no visible leakage |
