D641W Large-Diameter Pneumatic Ventilation Butterfly Valve Flange Type

D641W Large-Diameter Pneumatic Ventilation Butterfly Valve Flange Type

Ventilation butterfly valve is a kind of non-closed butterfly valve, widely used in building materials, metallurgy, mining, electric power and other production process of medium temperature ≤300℃ nominal pressure of 0.1Mpa pipeline, for connecting, opening and closing or adjusting the quality of...

Product Introduction

We will continuously develop Pneumatic Control Valve, Pneumatic Plastic Ball Valve, Electric Three Way Thread Ball Valve products that adapt to new situations and new needs, and strictly control the quality. Our company has become an excellent supplier of major system projects with our thoughtful and rigorous service attitude. We've got tightened inspection for quality of product. We always adhere to the innovative enterprise spirit of constantly surpassing ourselves, take the road of brand development, and introduce advanced foreign production equipment. We take high-quality product quality and efficient after-sales service as our goal, and welcome merchants to come to discuss cooperation. Since the establishment of our company, we have always insisted on focusing on customer needs and satisfaction, repaying customers with assured products and thoughtful services, and continuously enhancing customer satisfaction.

Ventilation butterfly valve is a kind of non-closed butterfly valve, widely used in building materials, metallurgy, mining, electric power and other production process of medium temperature ≤300℃ nominal pressure of 0.1Mpa pipeline, for connecting, opening and closing or adjusting the quality of the medium.


1. It is designed and manufactured by using the new structural form of welding between the plate plate and short structural plate, featuring compact structure, light weight, easy installation, small flow resistance, large flux, avoiding the influence of high temperature expansion, and easy operation.

2. No connecting rod or bolt inside, reliable operation and long service life.Can be multi - station installation, not affected by the flow of media



Through years of hard work, we now have a strong economic strength, a superb technical team and good after-sales service. We have not only achieved a good reputation in the D641W Large-Diameter Pneumatic Ventilation Butterfly Valve Flange Type market, but also won a large number of partners. In terms of team management, our company's forward-looking innovative thinking and keen strategic sense deepen the talent management mechanism. We have a long-term plan for the business, and we're going to continue to operate on that basis, with the hope of receiving a good reputation in the industry.

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