Slide Gate Valve

1. Overview

The Slide Gate Valve (also named Slide Valve) is a linear motion cut-off valve specially designed for powder, granular and small lump bulk materials. Unlike flap valves for intermittent air-locking discharging and rotary airlock valves for continuous quantitative feeding, this valve is dedicated to full flow cut-off and pipeline isolation. The integral gate plate slides horizontally inside the valve body to completely open or block the material channel, with no flow dead zone and full bore passage when fully open. It is mainly installed at silo bottoms, conveyor inlets and dust discharge pipelines for equipment isolation during maintenance, being an essential auxiliary valve for bulk material conveying systems.

2. Working Principle

The valve body is fixed between the upper and lower flanges of the material pipeline. The manual handwheel, electric actuator or pneumatic cylinder provides horizontal thrust to drive the high-strength gate plate to slide along the precision guide rail. When fully open, the gate plate completely exits the flow channel, realizing unobstructed material passing; when fully closed, the gate plate is tightly pressed against the sealing surface to cut off material flow and block air leakage. The integrated guide structure prevents plate deviation, ensuring stable switching and long-term sealing performance in abrasive material working conditions.

3. Core Features & Advantages

- Pure Cut-off Function: Professional for pipeline isolation and shutdown cutoff, not used for continuous feeding, complementary to airlock valves.

- Full Bore Design: Zero flow resistance when fully open, no material accumulation or blockage inside the valve cavity.

- Reliable Sealing Performance: Multi-layer wear-resistant sealing gasket + precision machined sealing surface, effectively preventing dust leakage.

- Multiple Driving Modes: Manual, electric and pneumatic types optional to match automatic and manual workshop systems.

- Strong Wear Resistance: Thickened gate plate and replaceable wear liner, durable for abrasive fly ash, ore powder and cement raw meal.

- Compact & Easy Installation: Simple flat body structure, small installation height, easy to mount under silos and above discharge valves.

- Wide Temperature Adaptation: Suitable for normal and high-temperature materials up to 250°C, compatible with most industrial ash handling systems.

4. Main Technical Specifications

5. Application Industries

- Thermal Power Plant: Silo bottom cutoff, fly ash conveying pipeline maintenance isolation

- Cement & Building Materials: Raw meal, slag and clinker material pipeline switch

- Dust Removal Industry: Dust collector ash hopper upper cut-off for equipment overhaul

- Mining & Metallurgy: Mineral powder and sinter material pipeline isolation control

- Environmental Protection: Industrial solid powder and incineration ash conveying cutoff

6. Customization Service

We provide customized slide gate valve solutions for bulk material systems. Customizable options include flange dimension, square/round port conversion, high-temperature resistant sealing assembly, stainless steel anti-corrosion body, explosion-proof electric actuator and limit switch feedback device. All valves undergo tightness and opening-closing cycle testing before delivery, with complete installation drawings, on-site commissioning guidance and lifelong after-sales technical support.