Butterfly Check Valve

1. Connection Ends: ASME B16.1 CL125,ASME B16.5 CL 150.
2.Working Pressure: 300PSl200PSl and 250PSl available upon request.
3.Temperature Range: 0℃- 80℃.
4.Coating: Fusion Bonded Epoxy Coating in accordance with ANSI/AWYYA C550.

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Description of Butterfly check valve

Butterfly check valve is a valve that automatically opens and closes the valve disc by relying on the flow of the medium itself. It is also called butterfly check valve and double disc check valve. It has the characteristics of a simple structure, small volume and small resistance loss. The working principle of the butterfly check valve is relatively simple. When the medium flows in the normal direction, the medium pressure pushes the valve disc to open, allowing the medium to pass smoothly; when the medium flows counter currently, the valve disc automatically closes under the action of the medium pressure and its own weight. Cut off the flow of media to prevent backflow of media.
The disc of the butterfly check valve is disc-shaped and opens and closes by rotating around the axis. The valve disc can be designed as single disc, double disc or multi-disc to adapt to the needs of pipelines of different diameters. The sealing performance can be improved by surfacing wear-resistant materials or rubber lining on the body. The connection method often adopts the clamping type, that is, the valve body is directly sandwiched between two flanges, which is easy and quick to install. Due to the streamlined design of its internal channel, butterfly check valves have relatively small fluid resistance and are suitable for large-diameter applications with low flow rates and infrequent changes in flow.
The installation position of butterfly check valve is generally required to be on horizontal pipelines, but it can also be installed on vertical or inclined pipelines according to actual needs. When installing, pay attention to the direction of medium flow and the direction of the arrow on the valve body. In terms of maintenance, it is necessary to regularly check the sealing performance and opening and closing flexibility of the butterfly check valve, and promptly clean the dirt and impurities inside the valve to ensure its normal operation.

Advantages of Butterfly check valve

1. Stable performance and high quality materials, the valve body is forged from raw materials, is strong and is not easy to be damaged;
2. Fine workmanship, accurate material labeling: beautiful and elegant, clearly visible writing, and clear material labeling, allowing you to use it more clearly;
3. Sealing material, long lasting, more wear resistant and zero leakage: the valve body is integrally reinforced and has excellent physical and mechanical properties and processing properties, so the sealing performance is very good;
4. Precision casting, long service life: high-temperature integrated casting to prevent corrosion and rust of the valve body;
5. Wear resistant, lightweight, and low flow resistance: The channel inside the valve is streamlined, with low flow resistance and small volume. Materials with good wear resistance are preferred;
Wide range of uses: It can be applied to media with different characteristics and installed horizontally or vertically to prevent backflow of media.

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    Specification

    Specification of Butterfly check valve

    Butterfly Check Valve

    Part No.  Part    Standard Specification Options
    1  Valve Body    ASTM A536, 65-45-12
    2  Disc    ASTM A536, 65-45-12 AISI 304, AISI 316, AL-Bronze UNC 95400
    3  Stem    AISI 420 AISI 304, AISI 316, AISI 416
    4  Spring    AISI 304 AISI 316
    5  Rubber Seat    EPDM NBR

     

    DN Dimensions(mm)
    Inch mm L D D1 D2
    2″ 50 54 102 64 46
    2.5″ 65 54 121 78 60
    3″ 80 57 134 94 70
    4″ 100 64 162 117 84
    5″ 125 70 192 145 115
    6″ 150 76 218 170 134
    8″ 200 95 273 224 184
    10″ 250 108 328 265 220
    12″ 300 143 408 310 260
    14″ 350 184 449 360 302
    16″ 400 191 512 410 350

    Other specifications have not been shown on our dimension chart, please CONTACT US for more information

    Please Send Email: [email protected] or Mobile:(WhatsApp): +86 155 15596408.

      Application

      1‌.Butterfly check valves are widely used in industrial pipeline systems, especially when it is necessary to prevent the backflow of media.
      This kind of valve relies on the flow of the medium itself to automatically open and close the valve disc. It is used to prevent the backflow of the medium, the reverse rotation of the pump and drive motor, and the release of the container medium.

      2.Butterfly check valves are suitable for a variety of fluid media and temperature conditions, but attention must be paid to their working pressure and temperature range to meet actual needs. It is especially suitable for pure pipelines, as well as industrial, environmental protection, water treatment, and high-rise building water supply and drainage pipelines to prevent medium backflow.

      3.In addition, butterfly check valves can also be used on pipelines that supply auxiliary systems where the pressure may rise above the system pressure. It is an important anti-backflow measure and is used in many industrial applications to help ensure safety and stability.

      Butterfly Check Valve Butterfly Check Valve
      Butterfly Check Valve is used for water supply Butterfly Check Valve is used for industry
      Butterfly Check Valve Butterfly Check Valve
      Butterfly Check Valve is used for drainage Butterfly Check Valve is used for environment protection

        Enquiry

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