Pneumatic flap valve is a valve used to control the flow of materials, and its working principle and application are as follows:
working principle
The pneumatic flap valve adjusts the alignment of the inlet and outlet channels by rotating the flap, thereby achieving the functions of opening, closing, and flow regulation
Specifically, the pneumatic flap valve uses compressed air to drive the cylinder to operate, achieving the opening and closing of the valve. In the case of a double flap valve, by alternately switching between the upper and lower flaps, a layer of valve plate in the middle of the equipment is always kept in a closed and isolated state to prevent air from flowing through
The opening and closing action of this valve is achieved by the external cylinder driving the shaft to rotate 90 degrees, thereby driving the flange and controlling the opening and closing of the feed valve.
application
Pneumatic flap valves are widely used in industries such as chemical, petroleum, metallurgy, pharmaceuticals, pesticides, dyes, and food processing. 
They play a critical role in situations where solid, granular, or powdered materials need to be reliably discharged from the bottom of storage tanks and other containers.
In addition, pneumatic flap valves can also be used for positive pressure conveying as balancing and boosting valves to assist material flow, while also having air lock function to meet the needs of conveying powder materials.
technical specifications
Pneumatic flap valves are designed for high-pressure applications, capable of withstanding pressures up to 20 psi and temperatures up to 1650 ° F or higher, depending on the application conditions.
They can be equipped with pneumatic, electro-mechanical, or gravity/counterweight drive devices. In addition, there is an option for a three fold board configuration to adapt to specific application requirements.
characteristic
Some characteristics of pneumatic flap valves include:
Improved safety: sturdy structure, no external clamping points.
Large diameter shaft and supporting bearings: reducing downtime caused by premature shaft failure.
No need for external energy: utilizing the energy of the regulated medium itself to achieve automatic regulation.
Good sealing performance: 99.9% sealing can be achieved without a sealed air system, and 100% sealing can be achieved with a sealed air system.
These valves are widely used due to their simple structure, reliable operation, stable performance, easy use, easy maintenance, and good sealing performance.