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    Butterfly Valve
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    ABOUT US
    provide one-stop ODM (Original Design Manufacturer) and OEM (Original Equipment Manufacturer) services to customers worldwide.

    Shanxi Holli Valve Machinery Manufacturing Co., Ltd. specialises in the  research, development, production and sales of industrial valves. Our core  business is to provide one-stop ODM (Original Design Manufacturer) and OEM  (Original Equipment Manufacturer) services to customers worldwide. This means  that we are not only able to design and manufacture products according to  our customers' needs, but also participate in the design process at the early  stage of product development, providing professional technical support and  innovative solutions for our customers. The company has passed ISO9001 quality management system certification, ISO14001 certification, ISO45001 certification, CE certification, etc..

    We provide customers with all kinds of high-quality industrial valves, gas transmission and distribution equipment and pressure regulators, and at the same time, we can provide digital production line design and development, pipeline control products R & D design, intelligent equipment R & D services. Holli products in the water treatment, HVAC, petrochemical, gas, electricity, nuclear power and other areas of strong development, domestic and foreign major projects have Haoli products involved.



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    Focus on high-performance valve manufacturing
  • D261 Series Butterfly Valve
    D261 series butterfly valve is a one-shaft, pinless, backrest-less, single-clip centerline soft-seal butterfly valve with a nominal pressure of PN25 kg. There are totally 9 specifications ranging from DN50 to DN300.
    Drag and drop products for rotating display
    1. The brass seal support pad at the shaft hole of the valve seat, and the O-ring groove is processed in the copper ring, which can effectively prevent the medium from leaking from the shaft hole
    2. The valve stem is connected to the butterfly plate with a pinless vertical flat structure, which can transmit large torque, and when the valve is closed, the radial maximum part of the valve stem bears pressure, which greatly reduces the displacement of the butterfly plate after being compressed
      D270 Series Butterfly Valve
      D270 series butterfly valve is a two-section shaft pinless type non-backrest clamp center line soft seal butterfly valve with a nominal pressure of PN10/PN16 kg. There are totally 14 specifications ranging from DN50 to DN600. The dimensions of side flange
      Drag and drop products for rotating display
      1. Face grooves help prevent seat buckling due to improper installation.
      2. The end face of the valve seat adopts a large arc and a large wide edge, which can ensure the sealing performance between the valve and the flange surface of the pipeline.
      3. The spherical butterfly plate has a smooth transition when opening and closing, reducing friction.
      4. The narrow sealing band can reduce the contact time between the butterfly plate and the valve seat during the opening and closing process of the valve.
      5. There is an annular protrusion at the shaft hole of the valve seat, which can effectively prevent the medium from leaking from the shaft hole.
      6. The double grooves in the bore can greatly improve the creep deformation of the valve seat during the opening and closing process of the valve.
      7. Seat without backrest, easy to assemble and easy to replace.
        H77X series check valve
        H77 series check valve is a wafer connection check valve with a nominal pressure of PN16 kg. There are totally 9 specifications ranging from DN50 to DN300. This series of check valves is composed of valve body, valve disc, valve stem, spring and other par
        Drag and drop products for rotating display
        1. The rubber inside the valve body is a whole, the rubber sealing surface will not fall off, and the service life is longer and more reliable.
        2. The rubber on the end face is higher than the valve body, which can realize the sealing with the flange surface of the pipeline, without using additional flange sealing gaskets.
        3. The upper valve stem not only plays the role of suspending the spring, but also prevents the valve plate from rotating more than 90°, thereby protecting the spring and prolonging the service life of the spring.
        4. Multi-size PTFE adjusting pads make the valve plate fixed in the center of the valve body without axial displacement.
        5. The size compatibility design with the flange connection of the pipeline meets the connection requirements of the national standard, American standard, Japanese standard and other multi-national flanges.
        6. The valve adopts the stem limit sealing structure of set screw and rubber sealing block, which is easy to disassemble and reliable in sealing.
        7. The valve adopts the stem limit sealing structure of set screw and rubber sealing block, which is easy to disassemble and reliable in sealing.
          The brass seal support pad at the shaft hole of the valve seat, and the O-ring groove is processed in the copper ring, which can effectively prevent the medium from leaking from the shaft hole
          The valve stem is connected to the butterfly plate with a pinless vertical flat structure, which can transmit large torque, and when the valve is closed, the radial maximum part of the valve stem bears pressure, which greatly reduces the displacement of the butterfly plate after being compressed
          Face grooves help prevent seat buckling due to improper installation.
          The end face of the valve seat adopts a large arc and a large wide edge, which can ensure the sealing performance between the valve and the flange surface of the pipeline.
          The spherical butterfly plate has a smooth transition when opening and closing, reducing friction.
          The narrow sealing band can reduce the contact time between the butterfly plate and the valve seat during the opening and closing process of the valve.
          There is an annular protrusion at the shaft hole of the valve seat, which can effectively prevent the medium from leaking from the shaft hole.
          The double grooves in the bore can greatly improve the creep deformation of the valve seat during the opening and closing process of the valve.
          Seat without backrest, easy to assemble and easy to replace.
          The rubber inside the valve body is a whole, the rubber sealing surface will not fall off, and the service life is longer and more reliable.
          The rubber on the end face is higher than the valve body, which can realize the sealing with the flange surface of the pipeline, without using additional flange sealing gaskets.
          The upper valve stem not only plays the role of suspending the spring, but also prevents the valve plate from rotating more than 90°, thereby protecting the spring and prolonging the service life of the spring.
          Multi-size PTFE adjusting pads make the valve plate fixed in the center of the valve body without axial displacement.
          The size compatibility design with the flange connection of the pipeline meets the connection requirements of the national standard, American standard, Japanese standard and other multi-national flanges.
          The valve adopts the stem limit sealing structure of set screw and rubber sealing block, which is easy to disassemble and reliable in sealing.
          The valve adopts the stem limit sealing structure of set screw and rubber sealing block, which is easy to disassemble and reliable in sealing.
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          A multi-category, multi-field, multi-interconnected modern high-tech enterprise integrating high-level OEM and ODM services.
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