







Double flange Worm butterfly valve
Size scope: DN50-DN 1000
Design standard: BS5155, API 609, BS EN593
Test Inspection: BS EN12266. API 598
Working temperature: -5℃~85℃
Working pressure: PN10-16
Suitable medium: Clean Water, Sewage
Send E-mail:info@wsdvalve.com Mobile: +86-173197327665
Double flange butterfly valve is a type of butterfly valve that has flanges on both ends of the valve body. These flanges enable easy installation and removal of the valve from the pipeline, making it a popular choice for various applications. Double flange butterfly valves are also known for their high flow capacity and excellent sealing ability.
The valve consists of a disc that rotates on an axis to control the flow of fluid through the pipeline. When the disc is in a closed position, the sealing surface of the disc comes in contact with the sealing surface of the valve body, creating a tight seal that prevents any leakage of fluid.
Double flange butterfly valves are commonly used in industries such as water treatment, HVAC, chemical, and food processing. They are available in a wide range of sizes, materials, and designs to suit different applications and requirements.
Why choose us!
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WEIZIDOM patent products, patent certificationThe 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. W
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The product has an independent identity to ensure traceabilityEach WEIZIDOM product has its own unique identification number, to ensure product traceability. E
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Provide material inspection reportAll WEIZIDOM products can provide the material inspection report of the main parts. S
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One-stop serviceOne-stop service, we not only supply high quality products, also supply solutions and after-sales service. D
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WEIZIDOM has a lot of project experienceWe have a lot of project experience in countries such as Pakistan and the Philippines, WEIZIDOM has always been noticed all over the world, and trust comes from quality. O
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WEIZIDOM has a strict quality control systemWEIZIDOM has a strict quality control system and before delivery, we test 100% of each product to ensure its quality, promising you a high quality product. M
Standard Test

Factory Tour
WEIZIDOM 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.








| DN | Size | L | A | B | D | C | H | ISO5211 | n-ød PN10 | n-ødPN16 | 
| 100 | 4″ | 127 | 155 | 114 | 220 | 180 | 225 | F07 | 8-ø19 | 8-ø19 | 
| 125 | 5″ | 140 | 170 | 125 | 250 | 210 | 240 | F07 | 8-ø19 | 8-ø19 | 
| 150 | 6″ | 140 | 190 | 143 | 285 | 240 | 260 | F07 | 8-ø23 | 8-ø23 | 
| 200 | 8″ | 152 | 205 | 170 | 340 | 295 | 305 | F10 | 8-ø23 | 12-ø23 | 
| 250 | 10″ | 165 | 235 | 198 | 405 | 355 | 335 | F10 | 12-ø23 | 12-ø28 | 
| 300 | 12″ | 178 | 280 | 223 | 460 | 410 | 380 | F10 | 12-ø23 | 12-ø28 | 
| 350 | 14″ | 190 | 310 | 279 | 520 | 470 | 410 | F10 | 16-ø23 | 16-ø28 | 
| 400 | 16″ | 216 | 340 | 300 | 580 | 525 | 480 | F14 | 16-ø26 | 16-ø31 | 
| 450 | 18″ | 222 | 375 | 345 | 640 | 585 | 530 | F14 | 20-ø26 | 20-ø31 | 
| 500 | 20″ | 229 | 430 | 355 | 705 | 650 | 600 | F14 | 20-ø26 | 20-ø34 | 
| 600 | 24″ | 267 | 500 | 410 | 840 | 770 | 676 | F16 | 20-ø30 | 20-ø36 | 
| 700 | 28 | 292 | 560 | 478 | 910 | 840 | 740 | F25 | 24-ø30 | 24-ø36 | 
| 800 | 32 | 318 | 620 | 529 | 1020 | 950 | 800 | F25 | 24-ø33 | 24-ø39 | 
| 1000 | 40 | 410 | 735 | 657 | 1225 | 1170 | 1045 | F25 | 28-ø36 | 28-ø42 | 
Advantages of WEIZIDOM butterfly valve!
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The thickness of valve body wall is up to standardThe valve body wall thickness meets the requirement of GB 26640, the thickness is up to the standard, and the pressure strength is guaranteed. W
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Valve body/valve plate is made of QT450-10 materialValve body valve plate is made of qt450-10 material with spheroidization rate above grade 3, tensile strength of 450Mpa and elongation of >10%. E
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Good sealing and long service life of valve seatThe valve seat is made of imported rubber material, with more than 50% rubber content; Elongation at break greater than 350%, valve sealingreliable, long life. S
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Soft back with wide side seatSoft backrest wide side valve seat, is advantageous to the valve installation, in the pipeline and flange boss contact surface is wide, sealing performance is reliable. Life is longer than a hard back. And easy to remove and replace. D
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No pin structure to avoid corrosionButterfly plate and valve shaft adopt through shaft without pin structure to avoid leakage caused by hole mounting pin and accelerated corrosion caused by coating damage. O
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Valve body is sprayed with Aksu epoxy powerdThe valve body is sprayed with world-renowned Aksu epoxy resin powder, which has stronger adhesion and better environmental tolerance after melting and curing. M



Project Name: Tanzania Water Project
Main Products: Gate Valves, Butterfly Valves, Check Valves, Pipe Fittings, etc.
The customer sent us the installation pictures of the WEIZIDOM product in the working condition project, and the feedback quality is very good, and will maintain a long-term cooperative relationship with WEIZIDOM;
Project Pictures:
 
       
      

 
       
      

 
       
       
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