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  • News

    Valve inspection and installation

    Oct 20, 2021
    Inspection before valve installation: ① Carefully check whether the valve model and specifications meet the requirements of the drawings. ② Check whether the valve stem and valve clapper open flexibl...
  • News

    What is a sight glass？

    Oct 12, 2021
    The working principle of valve sight glass and related knowledge The installation size is small, the driving torque is small, the operation is simple and fast, and it also has good flow adjustment fun...
  • News

    What are the butterfly valve classifications？

    Oct 09, 2021
    Butterfly valves can be divided into offset plate type, vertical plate type, inclined plate type and lever type according to the structure. According to the sealing form, it is divided into two types:...
  • News

    What is flange gasket？

    Sep 22, 2021
    IntroductionFlange gaskets are used in pipe flange connections. They are the seals between two flanges. The medium, pressure and temperature directly affect the selection of flange gaskets. Classifica...
  • News

    What is PVDF？

    Sep 22, 2021
    PVDF is polyvinylidene fluoride, and its appearance is translucent or white powder or granules. Polyvinylidene fluoride mainly refers to the homopolymer of vinylidene fluoride or the copolymer of vin...
  • News

    What is the general way to connect UPVC pipes?

    Sep 14, 2021
    The connection methods of UPVC pipe include socket rubber ring connection, adhesive connection and flange connection. Sometimes the connection also needs pipe fittings, but the method is nothing more...
  • News

    What are the types of plastic pipes?

    Sep 08, 2021
    CPVC (Chlorinated Polyvinyl Chloride) and UPVC (Rigid Polyvinyl Chloride) pipes under the PVC type. Chlorinated polyvinyl chloride (CPVC) pipe, also known as (poly)perchloroethylene, is made by chlo...
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    What is the working principle of the diaphragm valve

    Aug 24, 2021
    Diaphragm valve is a special form of shut-off valve, which appeared in the 1920s. Its opening and closing part is a diaphragm made of soft material, which separates the inner cavity of the lower valve...
  • News

    What are the advantages of pneumatic diaphragm valves

    Aug 16, 2021
    Pneumatic diaphragm valves have two main advantages: one is that the valve does not require a separate stem packing seal structure, the diaphragm plays a role of sealing the valve stem while cutting o...
  • News

    What are the characteristics of valve pipes of different materials

    Aug 12, 2021
    Plastic PVC valve pipe material classification description:PVC pipe has good tensile and compressive strength, but its flexibility is not as good as other plastic pipes, and it has excellent corrosion...
  • News

    What are the advantages and characteristics of diaphragm valves

    Aug 06, 2021
    Diaphragm valve is a clamping valve, it is mainly used for opening and closing the pipeline.Diaphragm valves have two main advantages:1. The valve does not require a separate valve stem packing seal s...
  • News

    What are the main advantages of plastic ball valves

    Jul 27, 2021
    Engineering plastic ball valve is mainly used to cut off or connect the medium in the pipeline. It can also be used for fluid adjustment and control. Compared with other valves, it has the following a...