



Inflatable Butterfly Valve
Size: 2”~24”
Pressure Rating:150LB,300LB
Material: ASTM A536 65-45-12, WCB, CF8M
Pneumatic Actuator: Double acting, Single Acting
Design Standard: GB/T 12238, Top Flange: ISO 5211
Inspection Standard: GB/T 13927
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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.
Why choose us!
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Our advantage
We’ve been in the valve industry for more than 25 years. WESDOM GROUP consists of 5 factories and 4 overseas branches. We face the global valve
service. Its product classification is complete, the commonly used product size is sufficient, and you can buy it with confidence!
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Our Mission
To be a high-quality supplier of fluid control systems and plan maker; To contribute our wisdom and strength to the development of the cutting-edge
technology of fluid control systems.
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Factory Tour
WESDOM GROUP consists of 5 factories and 4 overseas branches. The five factories are mainly located in Tianjin, Hebei, Shandong, Lianyungang and
Wenzhou. The four foreign branches are located in Tanzania, Zambia, Kenya and Indonesia.







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
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.
Project Name: A customer from South Africa purchase butterfly valve and extended stem butterfly valves.
Main Products: Expansion Butterfly Valves and Conventional Butterfly Valves
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:
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