400×400 Double Layer Electric Flap Valve

Short Description:

A 400×400 double-layer electric flap valve for fly ash discharge is commonly used in waste-to-energy plants and power plants to ensure controlled material flow while minimizing air leakage.

Product Detail

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Detailed Product Overview

400*400 Double Layers Electric Flap Valve is a dedicated square-type airlock discharge equipment optimized for fly ash, dry powder and fine granular material discharging. Different from single-layer flap valves, the double-layer dual-flap design adopts a staggered opening and closing working principle: one flap opens for material discharging while the other remains tightly closed, always maintaining internal and external pressure isolation. This completely solves the common defect of air leakage caused by single-door switching in negative pressure ash handling systems.

With a standard 400*400 square caliber, the valve perfectly matches conventional ash silo outlets, dust collector hoppers and pneumatic conveying interfaces. Equipped with a high-precision electric actuator, it realizes automatic, timed and quantitative ash discharge with stable operation and high control accuracy. The valve body adopts thickened wear-resistant steel structure with reinforced sealing surfaces, which resists long-term scouring of dry fly ash, avoids abrasion and deformation, and ensures long-term dust-tight and air-tight operation in harsh industrial environments.

Core Product Advantages

Double-layer Airlock Zero Air Leakage: Staggered double-flap alternate switching structure ensures one-way material discharge and continuous air lock isolation, thoroughly eliminating air backflow and pressure loss in negative pressure ash systems.
Standard 400*400 Matching Size: Industrial standard square caliber, perfectly compatible with power plant ash silos, ESP dust collectors and fly ash conveying pipelines, easy for direct installation and replacement.
Electric Automatic Operation: Equipped with high-quality electric actuator, supporting automatic timing discharge and linkage control, no frequent manual operation, high automation level.
Superior Wear & Corrosion Resistance: Thickened valve body and reinforced sealing structure resist fly ash scouring and abrasion, stable for long-term continuous dry ash working conditions.
No Blockage & Smooth Discharging: Large-flow square passage design avoids material bridging and ash accumulation, ensuring smooth and uniform fly ash discharge without clogging.
Low Maintenance & High Stability: Simple and sturdy mechanical structure, fewer vulnerable parts, stable operation with low failure rate, greatly reducing daily maintenance costs.

Application Scope

Specially applied for 400*400 caliber fly ash discharge occasions, including thermal power plant ash silo bottom discharge, ESP dust collector hopper discharging, waste incineration plant ash handling, cement plant dust removal systems, metallurgical flue gas ash removal and bulk dry ash pneumatic conveying systems. It is the dedicated air lock discharge valve for large-volume dry fly ash and fine powder materials.