Flow Control Gate Valve for Bulk Material Handling
(Katup Kendali Aliran untuk Penanganan Material Curah)
Reliable flow control gate valve for powder & granular materials
Overview
A flow control gate is a mechanical discharge device designed to regulate or shut off the flow of dry bulk materials beneath silos, hoppers, and storage bins.
In bulk material handling systems, this type of gate valve is commonly applied in cement silos, fly ash storage units, limestone powder feeding lines, and pneumatic conveying systems where stable discharge and effective dust sealing are required.
Driven by manual, pneumatic, or electric actuation, the sliding gate plate responds quickly to control signals, ensuring consistent material flow while minimizing leakage and bridging. As a result, flow control gates are widely selected for automated powder handling processes that demand accuracy, reliability, and long-term operational stability.
Flow control gates must comply with industrial dust control standards such as U.S. EPA guidelines.
Product Types
Pneumatic Flow Control Gate (air-operated slide gate)
Pneumatic flow control gates are ideal for automated systems where fast response and frequent cycling are required. They are widely used in cement grinding stations, silo discharge lines, and powder dosing systems.
A pneumatic flow control gate is driven by an air cylinder and designed for fast opening and closing.
✅ Quick response and stable movement
✅ Suitable for frequent switching operations
✅ Ideal for powder and granular material
✅ Low maintenance, long service life
Motorized Flow Control Gate (electric actuator type)
Motorized flow control gates offer precise opening control with adjustable speed, making them suitable for batching systems, clinker lines, and heavy-duty conveying operations.
A motorized flow control gate uses an electric motor and screw drive to precisely adjust the opening position.
✅ Accurate flow control and adjustable speed
✅ Best for continuous dosing and metering
✅ Smooth and stable operation
✅ Easy integration with automation systems
Manual Flow Control Gate (handwheel operated)
Manual flow control gates are designed for precise on-site adjustment of bulk material flow without requiring any power supply. They are widely used at silo outlets, chute bottoms, hoppers, and bulk discharge points.
A manual flow control gate valve uses a handwheel or lever to manually adjust the opening size, allowing precise control of powder or granular material flow.
✅ Suitable for powder & granular materials
✅ No electricity required (ideal for remote locations)
✅ Low maintenance and long service life
Typical Applications
LVRUI flow control gate valves—available in manual, pneumatic, and motorized versions—are widely used in bulk powder handling systems. They ensure accurate flow control and stable discharge for various industrial processes involving dry materials.
✅ Cement, fly ash, clinker, lime powder, gypsum, grain, pellets, and other dry bulk materials
✅ Silo discharge and feeding control for powder and granular materials
✅ Flow regulation for air slide conveyors, belt conveyors, screw conveyors and bucket elevators
✅ Batching and metering systems requiring adjustable or precise flow control
✅ Pneumatic conveying lines and dense phase conveying systems
✅ Industrial chutes, hoppers, spouts, and bin outlets
✅ Dust control and controlled feeding in grinding stations and packing plants
✅ Multi-point material distribution in cement plants and bulk terminals
✅ Feeding control for batching systems in building materials, mining, chemical, and power industries
Advantages
LVRUI flow regulation gates are engineered to provide precise discharge control, stable material flow, and long service life in demanding industrial environments.
✅ Reliable material regulation without bridging or blockage
✅ Multiple actuation options to suit different automation levels
✅ Reinforced sliding structure for abrasive and high-temperature materials
✅ Effective sealing design to reduce dust escape and environmental risk
✅ Smooth operation for continuous feeding, batching, or metering systems
✅ Custom dimensions available for silos, chutes, and conveyor inlets
Features
✅ Smooth and adjustable gate opening
✅ Dust-sealed body to prevent leakage
✅ Heavy-duty steel or stainless steel options
✅ Manual, electric or pneumatic actuator
✅ Suitable for abrasive and high-temperature materials
✅ Compact design for limited space
The gates can be equipped with manual, pneumatic, or electric actuators and integrated into PLC-based automation systems. LVRUI offers carbon steel and stainless steel options to meet different working temperatures and abrasive material conditions.
Technical Specifications
Below are the technical specifications of LVRUI flow control gates, available in multiple inlet sizes from 250×250mm to 630×630mm. Custom dimensions such as 800×800 and 1000×1000 are available for cement plant engineering projects.
| Item | B250 | B300 | B400 | B500 | B630 |
|---|---|---|---|---|---|
| Inlet Size (mm) | 250×250 | 300×300 | 400×400 | 500×500 | 630×630 |
| Flow Capacity (t/h) | 0–150(max) | 0–220(max) | 0–410(max) | 0–550(max) | 0–700(max) |
| Operation Type | Manual / Pneumatic / Electric | Manual / Pneumatic / Electric | Manual / Pneumatic / Electric | Manual / Pneumatic / Electric | Manual / Pneumatic / Electric |
| Body Material | Carbon Steel | Carbon Steel | Carbon Steel | Carbon Steel | Carbon Steel |
| Working Temperature (°C) | ≤150°C Standard / ≤180°C Optional | ≤150°C Standard / ≤180°C Optional | ≤150°C Standard / ≤180°C Optional | ≤150°C Standard / ≤180°C Optional | ≤150°C Standard / ≤180°C Optional |
| Suitable Materials | Cement/ powder material | Cement/ powder material | Cement/ powder material | Cement/ powder material | Cement/ powder material |
Selection of flow control gate size and actuation type should be based on material flow rate, particle characteristics, silo outlet dimensions, and downstream conveying requirements to ensure stable and dust-controlled operation.
FAQs About Flow Control Gate Valves
What is a flow control gate valve?
A flow control gate valve is a mechanical flow regulation device used to control, start, stop, or adjust the discharge of bulk materials such as cement, fly ash, clinker, and other powders. It is commonly installed under silos, hoppers, bins, or conveyors to ensure accurate and stable material flow.
What valve types are available for bulk material flow control?
Flow control gate valves are available in manual, pneumatic, and motorized (electric) versions. Manual gates are suitable for simple on/off control, pneumatic gates are ideal for fast response and automated systems, while motorized flow control gates provide precise and adjustable flow regulation for continuous batching and metering applications.
What applications are flow control gate valves commonly used for?
Flow control gate valves are widely used in cement plants, fly ash handling systems, grinding stations, bulk material terminals, and powder conveying systems. They are typically installed at silo outlets, chute bottoms, conveyor inlets, and discharge points where controlled material flow is required.
Can flow control gate valves be integrated into a bulk material handling system?
Yes. Flow regulation gates are key components in a complete bulk material handling system, working together with conveyors, feeders, loading chutes, and dust collection equipment to achieve safe, efficient, and dust-controlled bulk material transfer.
How do you select the right flow control gate valve for a specific application?
Selection of a flow control gate should be based on material flow behavior, discharge rate requirements, silo outlet dimensions, and downstream conveying equipment.
Key factors include particle size distribution, abrasiveness, required sealing performance, actuation method (manual, pneumatic, or electric), and the level of automation needed in the process. Proper selection helps ensure stable discharge, reduced dust leakage, and long-term system reliability.
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