Double Flap Airlock Valve Manufacturers and Suppliers in India. Double Flap valves, also known as or double flap gates, are a type of airlock valve commonly used in industrial applications. Our services includes Electrostatic Precipitator, ESP for Boiler, Electrostatic Precipitator In Thermal Power Plant, Pneumatic Conveyor, Ash Handling System, Pneumatic Conveying Systems, Dust Extraction System, Dome Valve Parts, Double Flap Valve, Rotary Airlock Valves, Slide Gate Valves, Clamshell Gate, Dedusting System, Collecting electrode, emitting electrode.