
Ductile Iron Wafer Butterfly Valve with Pneumatic Actuator
Product Introduction
All our Sight Glass With Mesh, Stainless Steel Dairy Tee, Seamless Steel Pipe are world-class quality and the most competitive price in the international market. We are committed to the innovation of products and the exploration of the development path of domestic brands. Our values are to create customer value, care for employee growth and achieve win-win situation.

Part material
Part Name | Material name |
Valve body | Cast iron, ductile iron, carbon steel |
Butterfly | Ductile iron (hard chromium plated surface), copper alloy, stainless steel |
Seat seal | Phenolic resin or aluminum alloy lined with nitrile rubber, eihylene-prapylene rubber, fluorine rubber |
Bushing | Copper alloy or copper back sintered PTFE |
Flange connection | GB/T8527、GB9113,Can also be specified by the user |
Structure length | GB/12221 |
Pressure test | GB713927; JB/T9092 |
Applicable medium | Freshwater, sewage, seawater, air, steam, food, Medicines, various oils, acids, alkalis, salts, etc. |
Performance parameter

Main connection size | Unit:mm | ||||||||
Nominal diameter | L | D1 | D | Z-ød | H | H0 | A | B | D0 |
50 | 43 | 125 | 165 | 4-18 | 63 | 438 | 125 | 125 | 80 |
65 | 46 | 145 | 185 | 4-18 | 70 | 453 | 125 | 125 | 80 |
80 | 46 | 160 | 200 | 8-18 | 83 | 478 | 125 | 125 | 80 |
100 | 52 | 180 | 220 | 8-18 | 105 | 519 | 125 | 125 | 80 |
125 | 56 | 210 | 250 | 8-18 | 115 | 713 | 325 | 245 | 150 |
150 | 56 | 240 | 285 | 8-22 | 137 | 749 | 325 | 245 | 150 |
200 | 60 | 295 | 340 | 8-22 | 164 | 843 | 325 | 245 | 150 |
250 | 68 | 350 | 395 | 12-22 | 206 | 947 | 363 | 313 | 200 |
300 | 78 | 400 | 445 | 12-22 | 230 | 1013 | 363 | 313 | 200 |
350 | 78 | 460 | 505 | 16-22 | 248 | 1046 | 363 | 313 | 250 |
400 | 102 | 515 | 565 | 16-26 | 289 | 1135 | 363 | 313 | 250 |
Overview of electric flange butterfly valve:
1. D971H electric flange butterfly valve is simple in structure, small in volume and light in weight, and only consists of a few parts.
2. The valve can be quickly opened and closed by 90 ° rotation, and the operation is simple. At the same time, the valve has good fluid control characteristics.
3. When the electric flange butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop through the valve is very small, so it has good flow control characteristics.
4. The electric flange butterfly valve has two sealing types: elastic seal and metal seal.
5. For elastic sealing valve, the sealing ring can be inlaid on the valve body or attached around the butterfly plate. The switch value can be adjusted directly by inputting 220 V power supply, and the adjustment module can be installed. The operation can be controlled by inputting control signal (4-20 mA DC or 1-5 V DC) and single-phase power supply.
be careful:
If the electric flange butterfly valve is required to be used as flow control, the main thing is to select the correct size and type of valve. The structure principle of butterfly valve is especially suitable for making large diameter valve.
Application:
It is widely used in oil pipeline, gas, chemical industry, water treatment, thermal power station and other general industries.
Price:Our price fluctuates with raw materials and exchange rate.
Please leave your contact information and give you a new quotation as soon as possible.
Packing: wooden case, wooden pallet or packing method specified by customers.
Our Ductile Iron Wafer Butterfly Valve with Pneumatic Actuator has the characteristics of compact size and easy operation, which will open up new markets. We actively integrate resources in the industry, follow the corporate tenet of 'high quality, excellent service, high reputation, and create a win-win' to provide our customers with more cost-effective products. We believe that we will be able to produce products that satisfy our customers and our own satisfaction.
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