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  • Valve construction and installation points

    1) The installation position, height, and direction of import and export must meet the design requirements, and the connection should be firm and tight.2) For all kinds of manual valves installed on the thermal insulation pipeline, the handle shall not be downward.3) Visual inspection must be carried out before the valve is installed, and the nameplate of the valve should comply with the current national standard "General Valve Mark" GB 12220. For valves with a working pressure greater than 1.0 ...

    2022-10-09

  • Ball valve installation precautions

    (1) The disassembly and decomposition operation must be carried out only after it is confirmed that the upper and downstream pipelines of the ball valve have been depressurized.(2) Non-metal parts should be removed from the cleaning agent immediately after cleaning, and should not be soaked for a long time.(3) The bolts on the flange must be tightened symmetrically, gradually and evenly during assembly.(4) The cleaning agent should be compatible with the rubber parts, plastic parts, metal parts ...

    2022-09-29

  • Disadvantages of ball valve

    ①Because the most important valve seat sealing ring material of the ball valve is PTFE, it is inert to almost all chemical substances, and has a small friction coefficient, stable performance, not easy to age, wide temperature range and excellent sealing performance comprehensive characteristics. But the physical properties of PTFE, including high coefficient of expansion, susceptibility to cold flow, and poor thermal conductivity, require that seat seal designs must be built around these proper...

    2022-09-23

  • Ball valve advantages

    Advantages: ① has the lowest flow resistance (actually 0); ② can be reliably used in corrosive media and low-boiling liquids because it will not get stuck during operation (when there is no lubricant); ③ in larger Within the range of pressure and temperature, it can be completely sealed; ④ It can realize rapid opening and closing, and the opening and closing time of some structures is only 0.05~0.1s, so as to ensure that it can be used in the automation system of the test bench. When the valve i...

    2022-09-16

  • Daily maintenance of ball valve

    Having a long service life and maintenance-free period will depend on several factors: normal operating conditions, maintaining a harmonious temperature/pressure ratio, and reasonable corrosion dataWhen the ball valve is closed, there is still pressurized fluid inside the valve bodyBefore Servicing: Depressurize the line and keep the valve in the open position; disconnect power or air supply; disengage the actuator from the yokeThe dismantling and dismantling operations must be carried out after...

    2022-09-09

  • Application of ball valve

    Since the ball valve usually uses rubber, nylon and polytetrafluoroethylene as the material of the seat seal, its operating temperature is limited by the material of the seat seal. The cut-off function of the ball valve is accomplished by pressing the metal ball against the plastic valve seat under the action of the medium (floating ball valve). Under the action of a certain contact pressure, the valve seat sealing ring undergoes elastic-plastic deformation in local areas. This deformation can c...

    2022-09-02

  • Installation and use of electric ball valve

    1. Indoor installations or outdoor applications with protective methods;2. Outdoor open-air installations, eroded by wind, sand, rain, sunlight, etc.;3. With flammable, explosive gas or dust environment;4. Environment in wet tropics and dry tropics;5. The temperature of the pipeline medium is as high as 450 ℃ or more;6. The ambient temperature is below -20℃;7. Easily flooded or immersed in water;8. Environment with radioactive substances (nuclear power plants and radioactive substances test equi...

    2022-08-26

  • Electric ball valve structure

    The structure of the electric ball valve is only composed of a few parts, and the material consumption is low; the structure of the electric ball valve is small in size, light in weight and small in installation size, and the driving torque is small. Quick opening and closing; and also has good flow regulation performance and sealing characteristics. In the application field of large and medium caliber, medium and low pressure, electric ball valve is the dominant valve form. When the electric ba...

    2022-08-19

  • Ball valve product features

    1. The three-way ball valve adopts an integrated structure in structure, the sealing type of the 4-sided valve seat, less flange connections, high reliability, and lightweight design.2. The three-way ball core is divided into T type and L type, with long service life, large flow capacity and small resistance.3. The ball valve is divided into two types: single-acting and double-acting according to the action type. The single-acting type is characterized in that once the power source fails, the ba...

    2022-08-12