News

  • What should be paid attention to in the maintenance process of pneumatic ball valve

    16-05-2022

    Pneumatic ball valves often need to be kept clean and tidy during use, and the transmission threads also need to be lubricated regularly. If a fault is found, it must be stopped immediately before use, and the fault can be eliminated after the cause is identified. So what details should be paid atte...

  • What methods can be used to solve the problem that the regulating valve is not strictly closed

    16-05-2022

    Pneumatic control valves are widely used in petrochemical, power plants, iron and steel metallurgy, food processing, and water treatment industries, especially in large enterprises that require automatic control. The electric valve also creates conditions for the remote control of the valve, thus re...

  • What are the classifications of gas valves

    16-05-2022

    Gas valves have a wide range of uses, a wide variety, and a variety of classification methods. In general, it can be divided into two categories:The first type of automatic valve: is a valve that operates by itself depending on the ability of the gas itself. Such as check valve, regulating valve, pr...

  • What are the standards and specifications for valve pressure testing

    16-05-2022

    The standards and specifications for valve pressure testing are as follows: 1. Under normal circumstances, the valve is not subjected to a strength test, but the valve body and bonnet or valve body and bonnet damaged by corrosion should be subjected to a strength test after repair. For the safety va...

  • What are the standards for hot melt welding of PE pipes

    16-05-2022

    1. Fix the welding nozzle on the heat welding machine, the amount of misalignment is less than 20% of the thickness 2. Use a bilateral cutting machine to cut the weld to be smooth and smooth 3. Adjust the temperature to 190~240℃ 4. Wipe the heating plate with a clean cotton cloth 5. Clamp the two se...

  • What are the precautions for the use of PPR water pipes

    16-05-2022

    1. The quality of the PPR pipe is not as good as that of the metal pipe. During construction, attention should be paid to protection to avoid damage to the PPR pipe caused by inappropriate external force. Mark the position of the pipeline after dark application, so as not to damage the pipeline for ...