Technical Articles

  • Installation Steps of Insulation Ball Valve
    Posted: 09/23/2016 16:07:21 Hits: 6

    Insulation ball valve and flanged gate valve are the same category of valve. Due to good heat preservation and cold insulation, insulation ball valve has been widely applied in chemical engineering, metallurgy, pharmacy and food, having high popularity on the market. Proper installation cannot onl...

  • Types of Valves in Water Supply System
    Posted: 09/23/2016 16:07:21 Hits: 8

    The valve, commonly utilized in water supply system, includes gate valve (screw thread, flange), globe valve (screw thread), check valve (screw thread, flange), butterfly valve, etc.   Gate valve: Actuation of gate valve can be classified into clear bar, dark bar, manual, electric and mot...

  • Types of Oil Lubrication Hard Seal Plug Valve
    Posted: 09/23/2016 16:07:21 Hits: 4

    Oil lubrication hard seal plug valve can be classified into conventional oil lubrication plug valve and pressure balance plug valve. Tailor-made grease is injected between body and plug from top of plug, forming oil film to reduce torque of valve, highly improving sealing and service life.  ...

  • Characteristics and Advantages of Three-way Ball Valve
    Posted: 09/23/2016 16:07:21 Hits: 13

    Three-way ball valve utilizes ball as its closure member. The ball rotates with center line of body to open or close valve.   Characteristics of three-way ball valve 1. Open or close without friction The structure does not have the disadvantages that sealing faces of conventional valve ...

  • Applicable Working Conditions of Butterfly Valves
    Posted: 09/23/2016 16:07:21 Hits: 4

    The disc or butterfly plate of butterfly valves rotates shaft roundly to open or close. Butterfly valves are mainly used for cutting-off or throttling in pipes. Butterfly valves are suitable for pipelines of engineering systems to transmit corrosive or non-corrosive fluid media, including coal gas...

  • Use Thermal Infrared Imager to Detect Valve Leakage
    Posted: 09/23/2016 16:07:21 Hits: 3

    Statistics show that leakage exists in about 20% of valves in industrial equipment. Caused direct economic loss accounts for about 50% of total losses. Meanwhile, valve leakage also causes pollution to environment. Use thermal infrared imager to detect valve leakage in case of industrial accident. ...

  • Features and Usage of Pneumatic Tefulong Butterfly Valves
    Posted: 09/23/2016 16:07:21 Hits: 3

    Pneumatic tefulong butterfly valves use disc with ball sealing surface cylinder packed by PTFE, having convenient operation, rigorous sealing performance and long service life. The butterfly valves can be used for rapidly cutting off or regulating flow. Pneumatic tefulong butterfly valves are suit...

  • Corrupt Prevention Measures Used for Metal Valves
    Posted: 09/23/2016 16:07:21 Hits: 4

    Electrochemistry corrodes metals in different forms. It does not only function between two kinds of metals, but also can cause potential difference due to differential solubility of solution, differential solubility of oxygen and the tiny difference in internals of metals, enhancing corrosion. Som...

  • How to Choose Regulating Valve?
    Posted: 09/23/2016 16:07:21 Hits: 2

    Regulating valve, also called as control is a kind of valves which receive control signal and change flow of  fluid with the help of motive power. Regulating valve consists of actuator and valve. Based on motive power, regulating valve can be classified into pneumatic regulating valve(using c...

  • Axial Flow Check Valve in LNG Terminal
    Posted: 09/23/2016 16:07:21 Hits: 4

    For energy conservation, noise reduction, low fluid resistance, rapid on-off, axial flow check valve has been widely used for oil and gas transmission pipeline. In China, for large LNG terminals having been built or under construction, axial flow check valve is installed at the position where non-...