What is a worm-gear flange butterfly valve？
The worm-gear flange butterfly valve (also known as the worm-gear flange reverse valve) generally adopts triple eccentric multi-level metal hard seal structure. It is widely used in metallurgy, electric power, petrochemical industry, water supply and drainage and municipal construction and other industrial pipelines with medium temperature ≤425℃, for regulating flow and truncating fluid use. The valve adopts triple eccentric structure. The seat and disc sealing surface are all made of different hardness and stainless steel. It has good corrosion resistance and long service life. The commonly used connection methods of worm-gear flange butterfly valves are divided into flange type worm-gear stainless steel butterfly valve and clamp type stainless steel butterfly valve.
Advantages of the worm-gear flange butterfly valve：
1.Valve body wall thickness meets standard
The valve body wall thickness meets the requirements of GB 26640, the thickness is up to standard, and the pressure resistance is guaranteed.
The body and disc are all made of QT450-10 material, the spheroidization rate more than 3 levels. The tensile strength is 450Mpa, and the elongation is above 10%.
3.Good seat sealing, long service life
The seat adopts imported rubber material, which contains more than 50％ rubber; the elongation rate is greater than 350％, the valve seal is reliable and has long service life.
4.Soft back with wide seat
Soft back wide edge seats are conducive to the installation of valve. In the pipeline, the contact surface is wide and the sealing performance is reliable. It is easy to remove and replace.
5.No pin structure to avoid corrosion
The disc and shaft are of no pin construction, which avoids leakage caused by installation and accelerated corrosion caused by coating damage.
1. WESDOM patent products, patent certification
The product side flanges comply with national, German, Russian, American, British and Japanese standards and other domestic and international standards for multiple pressures, easy connection and wide adaptability, which can reduce the type of purchase and stock.
2. The product has an independent identity to ensure traceability
Each wesdom product has its own unique identification number, to ensure product traceability.
3. Provide material inspection report
All wesdom products can provide the material inspection report of the main parts.
4. One-stop service
One-stop service, we not only supply high quality products, also supply solutions and after-sales service.
5. WESDOM has a lot of project experience
We have a lot of project experience in countries such as Pakistan and the Philippines, WESDOM has always been noticed all over the world, and trust comes from quality.
Quality control process