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  • How to maintain worm gear ball valves correctly
    • Mar , 28 2024

    Maintaining the worm gear ball valve can extend its service life and ensure its normal operation. The following is the correct maintenance method for worm gear ball valves: 1、 Regular inspections: Regularly inspect the appearance and working condition of the ball valve, and promptly handle any damage or abnormal situations. Meanwhile, check if the fastening bolts of the valve are loose and if ther...

  • Hardening method of metal hard sealed ball valve balls and valve seats
    • Mar , 28 2024

    At present, the commonly used hardening processes for the surface of metal hard sealed ball valves mainly include the following: (1) Surface welding (or spray welding) of hard alloy on the sphere can achieve a hardness of over 40HRC. The process of surface welding of hard alloy on the sphere is complex, with low production efficiency, and large area welding can easily cause deformation of the part...

  • How to choose valve plasma welding equipment?
    • Mar , 26 2024

    How to choose valve plasma welding equipment? Background of valve overlay welding Scratches, erosion, and corrosion can all damage the valve sealing surface. The composition and metal structure of sealing materials, surface treatment process, hardness and hardness difference, specific pressure and conformity, and many other factors can all affect the quality of valve sealing surfaces. Each type of...

  • What is a bellows globe valve?
    • Mar , 21 2024

    Bellows globe valve, also known as bellows sealed globe valve, is designed with automatic roll welding to form a metal barrier between the fluid medium and the atmosphere, ensuring zero leakage of the valve stem. The internal structure of the bellows globe valve adopts a bellows structure, and the lower end of the stainless steel bellows is welded to the valve stem to prevent process fluid from co...

  • Structural characteristics of single seat regulating valve, double seat regulating valve, and sleeve regulating valve
    • Mar , 21 2024

    There are various types of regulating valve structures, each with its own characteristics. In engineering design, it should be determined based on factors such as on-site conditions (temperature, pressure, flow rate, pressure difference, installation position, etc.), fluid properties (viscosity, corrosiveness, saturation temperature, etc.), requirements of the regulating system (adjustable ratio, ...

  • Overview and application of pneumatic expansion butterfly valves
    • Mar , 19 2024

    The working principle of pneumatic expansion butterfly valve is to rely on compressed air provided by the air source to cause elastic deformation of the sealing pair inside the valve body, thereby achieving switch control. After the gas source enters the valve body, it is compressed to a certain pressure through a compressor and then sent into the cylinder, causing the piston to move left or right...

  • Basic knowledge of pneumatic valve control accessories
    • Mar , 19 2024

    Pneumatic valve is a type of valve driven by compressed air, which has the advantages of high efficiency, safety, and environmental protection, and is widely used in industrial automation control systems. Pneumatic valves consist of three parts: pneumatic actuator, control accessories, and valve body. The pneumatic actuator is the part that realizes the opening and closing action of the valve, whi...

  • Hardening method of metal hard sealed ball valve balls and valve seats
    • Mar , 14 2024

    At present, the commonly used hardening processes for the surface of metal hard sealed ball valves mainly include the following: (1) Surface welding (or spray welding) of hard alloy on the sphere can achieve a hardness of over 40HRC. The process of surface welding of hard alloy on the sphere is complex, with low production efficiency, and large area welding can easily cause deformation of the part...

  • What is a ball valve? What is the function of a ball valve?
    • Mar , 12 2024

    Ball valve is a common type of valve, and its design characteristics make it widely used in various industrial applications. Ball valves are favored for their simplicity, reliability, and ease of operation, playing an important role in fluid control. The main components of a ball valve include a sphere with a diameter and inlet and outlet pipes located on both sides of the sphere. Spheres are usua...

  • Centrifugal pump foundation: mechanical seals for internal and external flushing
    • Mar , 12 2024

    The evolution from packing seal to mechanical seal: The pump impeller is installed on the pump shaft that passes through the pump casing or volute. If there is no pump seal, the hollow "damp" part of the shaft entering the volute will become the source of continuous leakage. Over a hundred years ago, most pumps relied on packing to prevent pump leakage while allowing the shaft to rotate freely. Th...

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