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  • Pneumatic Butterfly Valve Pressure Test Method
    Pneumatic Butterfly Valve Pressure Test Method
    • 2021-05-03 16:29

    Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. The pneumatic butterfly valve uses a circular butterfly plate that rotates with the valve stem for opening and closing

    Keywords: / pneumatic butterfly valve,butterfly valve pressure test /

  • Valve basic knowledge 4 - Stem Nut Material
    Valve basic knowledge 4 - Stem Nut Material
    • 2021-05-03 10:14

    The stem nut directly bears the axial force of the stem during the opening and closing of the valve, so it must have a certain strength. At the same time, it and the valve stem are threaded transmission, which requires a small friction coef

    Keywords: / valve bolt nut, butterfly valve stem, butterfly valve body material /

  • Valve basic knowledge III -  Stem Material
    Valve basic knowledge III - Stem Material
    • 2021-05-03 10:12

    During the opening and closing of the valve, the valve stem bears the forces of tension, pressure and torsion, and is in direct contact with the medium. At the same time, there is relative frictional movement with the packing. Therefore

    Keywords: / valve stem material,ss410 stem valve /

  • Valve basic knowledge I - valve main parts materials
    Valve basic knowledge I - valve main parts materials
    • 2021-05-03 09:58

    The valve body, bonnet and gate (disc) are one of the main parts of the valve, which directly bear the pressure of the medium, and the materials used must meet the requirements of "valve pressure and temperature rating". The commonly used m

    Keywords: / valve knowledge,valve parts,valve material /

  • Valve basic knowledge II - Sealing surface material
    Valve basic knowledge II - Sealing surface material
    • 2021-05-03 09:54

    The sealing surface is the most critical working surfaceof the valve. The quality of the sealing surface is related to the service life of the valve. Generally, the sealing surface material should consider factors such as corrosion resistan

    Keywords: / sealing material,valve sealing, valve seat /

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