Electro-Hydraulic Slide Gate Valve Product Introduction

1. Product Overview

2. Main Structure

• Valve Body: Box or frame type structure, welded by carbon steel or stainless steel. It features high rigidity, anti-deformation performance and low flow resistance.

• Gate Plate: Made of 304/316 stainless steel with flat sealing surface and cutting edge. It can cut sundries and keep the sealing surface clean automatically.

• Electro-Hydraulic Actuator: Integrated with motor, hydraulic pump, oil cylinder and control valve group. It provides large thrust, self-locking function and overload protection.

• Sealing System: Combined flexible packing and metal/soft sealing pair, which is high temperature resistant, wear-resistant and with low leakage rate.

• Guide & Support Assembly: Equipped with wear-resistant slide rails and limit devices to ensure stable operation and prevent deviation of the gate plate.

3. Working Principle

1. Upon receiving opening or closing signal, the motor drives the hydraulic pump to build up oil pressure.

2. Pressurized oil flows into the oil cylinder through control valves. The push rod extends and retracts to drive the gate plate to move horizontally.

3. The passage is fully open when the gate retracts, and completely isolated when the gate closes. Flow regulation can be realized by adjusting the stroke.

4. The relief valve provides overload protection. The valve stays locked hydraulically after positioning, and the gate will not move even in case of power failure.

4. Key Features

• Powerful Thrust: Great hydraulic output force, suitable for large-diameter, heavy-load and high-dust working conditions without jamming.

• Reliable Sealing: Combined flat hard seal and packing structure, high temperature and corrosion resistance with excellent zero-leakage performance.

• Smooth Operation: Hydraulic buffer design enables adjustable opening/closing speed, no impact and low noise, effectively extending service life.

• High Automation: Supports local and remote control, and can be connected with PLC system, ideal for high-altitude and high-risk working areas.

• Compact Structure: Short overall length and small occupation space, easy for installation and maintenance in narrow spaces.

• Safe & Durable: Equipped with overload protection and power-off self-locking device. Stainless steel gate plate features good anti-corrosion property for long service life.

5. Main Technical Parameters

• Nominal Diameter: DN200 ~ DN3000 (customizable)

• Working Pressure: ≤1.0 MPa (upgraded on request)

• Working Temperature: -20℃ ~ +450℃; Max. 600℃ for high-temperature type

• Driving Mode: Electro-hydraulic (380V/50Hz)

• Control Mode: Local pushbutton / Remote PLC control

• Material: Valve body: carbon steel / stainless steel; Gate plate: stainless steel; Seal: high temperature resistant flexible material

• Leakage Rate: ≤0.1% (gas & liquid)

6. Application

• Environmental Protection & Power Industry: Flue ducts for desulfurization, denitrification and dust removal; ash and powder conveying; silo bottom discharging.

• Metallurgy & Iron and Steel Industry: Blast furnace gas pipelines, sintering plant air ducts, isolation of ore and coke silos.

• Building Material & Cement Industry: Discharging of cement silo, limestone silo and coal silo; on-off control of powder conveying lines.

• Chemical & Waste Incineration Industry: High-temperature flue gas, corrosive medium, ash slag and leachate systems.

• Mining & Coal Chemical Industry: Pipeline and hopper control for ore slurry, coal slurry and granular materials.

7. Advantages Comparison

• Vs. Pneumatic Valve: Higher and stable thrust, not affected by air pressure fluctuation, more suitable for heavy-load conditions.

• Vs. Manual Valve: Labor-saving, remotely controllable, safe and efficient for large-diameter valves and high-risk positions.

• Vs. Ordinary Electric Valve: Better anti-jamming performance and overload protection, buffer operation to avoid motor burnout and achieve longer service life.

Short Version (for brochure & label)

Electro-Hydraulic Slide Gate Valve