Inflatable Butterfly Valve

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.

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.

Operate:

Less friction, low torque, less wear, longer life.

A customer from South Africa purchase butterfly valve and extended stem butterfly valves.

Main products:

Expansion Butterfly Valves and Conventional Butterfly Valves

Project description:

The client in this case is from South Africa and is a large-scale local valve distributor. They have their own store in local and often import some valves from abroad to store or supply to local customers.

This Client have cooperated with WESDOM many times. Almost every once in a while, they will contact the foreign trade salesman of WESDOM. They bought a batch of valves from WESDOM and stocked them in their store.

They cooperate with WESDOM this time.That’s because that a local customer needs a batch of expansion butterfly valves.And then through many cooperations with WESDOM valve, the two sides have established a very close cooperative relationship.

Client feedback:

We have worked with WESDOM too many times and have been very satisfied each time. I was impressed by the enthusiasm of the WESDOM business people and the high quality of the company’s valve products. We are very willing to maintain a long-term cooperative relationship with WESDOM valve.

Project pictures: