Inflatable Butterfly Valve

Inflatable Butterfly Valve manufacture by PINDEE VALVE,which this kind of Inflatable Butterfly Valve is one of our new design product,welcome our new and regular customers send us inquiries to sales@pindee.com
The unique design of the expansion butterfly valve uses gas pressure to extend the valve seat toward the valve disc to provide a smooth distribution of pressure to the seal at all times. Since only momentary contact occurs between the valve disc and the valve seat during the opening and closing of the valve, the valve disc is only slightly bumped. On the contrary, for the general butterfly valve, the collision caused by the valve disc rubbing the valve seat will reduce the performance and life of the valve.

The butterfly valve is closed and the seat is not sealed

The butterfly valve is closed and the seat is sealed

The butterfly valve is open and the valve seat is not sealed

Pindee Valve Manufacture

Application:

Pneumatic expansion valve is a kind of valve which can achieve close sealing by compressed air. It is suitable for handling dust, bulk mate-rials, slurry, chemical powder, cement, quartz sand, fly ash, ceramics, carbon powder, dust, precious metal powder, etc. Operating principle of pneumatic expansion butterfly valve:

A: When the valve plate of pneumatic expansion butterfly valve is in the state of loose sealing ring (non expansion), a fixed gap is formed between the sealing ring and the valve plate.

B:When the compressed air enters the back of the sealing ring, the surface of the sealing ring expands and clings to the surface of the valve plate to form an effective seal.

C:Before the valve is opened, the sealing ring is relaxed in advance to form a fixed clearance.