Double Flap Valve for Dust-Free Powder Discharge
(Katup Double Flap untuk Pembuangan Serbuk Bebas Debu)
Double Flap Valve for Dust-Free Powder Discharge & Airtight Material Sealing
Overview
The double flap valve is a heavy-duty airlock discharge system designed for continuous, dust-free handling of fine powders and bulk materials such as cement, fly ash, lime powder, alumina, feldspar, and chemical powders.
Its dual-chamber structure ensures airtight sealing, prevents dust leakage, and eliminates material backflow while maintaining stable feeding performance.
This valve is widely used in:
✅ Cement plants
✅ Pneumatic conveying systems
✅ Dust collection systems
✅ Silo unloading systems
✅ Chemical and mineral processing industries
Learn more about bulk material handling equipment
Features
✅ Continuous discharge with alternating flap operation
✅ Zero air leakage for stable pneumatic conveying
✅ Dust-free operation improves environmental control
✅ Handles high-temperature, abrasive, and fine materials
✅ Suitable for negative pressure and positive pressure systems
✅ Long service life with durable steel construction
✅ Compatible with existing silo outlets and dust collectors
See our dust collection solutions
Working Principle
✅ Material enters the upper chamber
✅ Upper flap closes → lower flap opens
✅ Material discharges while maintaining air pressure balance
✅ Dual flaps work alternately to ensure continuous, dust-free feeding
✅ Prevents air escape, dust leakage, and material backflow
This principle enables the double flap valve to operate as an airlock valve, allowing material passage while maintaining system pressure integrity.
Matched with air-slide and pneumatic conveying lines
What is an airlock (Wikipedia)： https://en.wikipedia.org/wiki/Airlock
Applications
✅ Silo and hopper discharge
✅ Fly ash, cement, lime powder handling
✅ Dust collector discharge points
✅ Pneumatic conveying lines
✅ High-temperature or abrasive powder applications
✅ Bulk powder processing industries
Advantages
✅ Efficient dust-tight operation
✅ Stable feeding and smooth discharge
✅ Long-lasting heavy-duty construction
✅ Easy maintenance and low operating cost
✅ Suitable for harsh industrial environments
✅ Improved system efficiency in pneumatic conveying
Need a reliable double flap valve for your dust-free powder discharge system?
Contact LVRUI for fast delivery and expert technical support.
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