Motorized Round Coal Gate Valve

The Motorized Round Coal Gate Valve is a heavy-duty,motor-driven isolation valve engineered specifically for coal handling systems,power plants,and industrial bulk material pipelines.It integrates a robust round gate body with an electric actuator,enabling remote,automated,or local control to start/stop or regulate the flow of coal powder,lump coal,ash,and other abrasive solid mediums.Designed for harsh coal-industry conditions,it delivers reliable sealing,wear resistance,and low-maintenance operation.

Key Features

Heavy-Duty&Abrasion-Resistant Design

Round gate and valve body made of high-strength cast iron or steel,with hard alloy welding on sealing surfaces to resist wear,corrosion,and impact from coal particles.

Optimized flow passage minimizes material buildup and jamming,ensuring smooth coal conveyance.

Motorized Actuation for Automation

Equipped with a multi-turn electric actuator(IP67 protection,optional explosion-proof Ex dⅠfor coal mine safety).

Supports remote control(via PLC/SCADA),local operation,and on-site manual override(handwheel for power failure).

Actuator with thermal protection(Class H motor)and overload protection ensures safe operation under extreme conditions.

Reliable Sealing&Tight Shut-Off

Double-sided sealing structure with elastic sealing elements prevents coal dust leakage;bidirectional sealing available for positive/negative pressure pipelines.

Inverted sealing design for the valve stem enhances sealing performance under high pressure.

Easy Maintenance&Long Service Life

Modular structure for quick disassembly,cleaning,and replacement of wearing parts.

Stem with tempering and surface nitriding treatment resists corrosion and scratching.

Wide Compatibility

Size range:DN100–DN1200;pressure rating:PN6–PN40.

Operating temperature:-20°C to 200°C,suitable for hot coal ash and high-temperature flue gas systems.

Working Principle

The electric actuator receives control signals(4–20mA/0–10V or digital commands)and drives the valve stem to rotate via a gear reduction mechanism.The stem’s linear motion lifts or lowers the round gate:

Fully Open:Gate retracts completely,allowing unobstructed coal flow with minimal pressure loss.

Fully Closed:Gate seats tightly against the sealing surface,blocking flow completely.

Modulating:Precise gate positioning for flow regulation(optional modulating actuator).

Applications

Power Plants:Coal feeding systems,ash discharge pipelines,and pulverized coal conveying lines.

Coal Mines:Underground coal transportation,washing plants,and gangue discharge systems.

Steel&Cement Plants:Raw coal and clinker handling pipelines.

Chemical Industry:Conveyance of solid granular materials and abrasive slurries.