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  • Notice Of Change Of English Name Of Zhengfeng Valve GroupNotice Of Change Of English Name Of Zhengfeng Valve Group2019/07/05The English Name of ZhengFeng Valve Group Co., Ltd. is officially changed from ZhengFeng Valve Group Co., Ltd. to ZECO Valve Group Co., Ltd., the LOGO and Chinese company name will not change.
  • Material of ValveMaterial of Valve2019/06/26There are nine commonly used materials for valve bodies:1. Gray cast iron, suitable for working temperature between 15 ~ + 200 ℃, nominal pressure 1.6 Mpa or less low-pressure valve;2. Malleable cast iro...
  • Maintenance of Ball ValveMaintenance of Ball Valve2019/06/251、Check that the ball valve is in full open positionAfter grease injection, check whether the diameter of the valve ball is flush with the plane of the inner chamber of the valve seat. If there is an...
  • Requirements for Manufacturing and Installation of Cryogenic ValveRequirements for Manufacturing and Installation of Cryogenic Valve2019/06/24Installation requirements for cryogenic valvesBecause of the special structure of cryogenic valve, the installation of cryogenic valve also has its special requirements.Because of the long neck bonnet...
  • Installation of ValveInstallation of Valve2019/06/24The following valve installation for you to explain the matters needing attention.1. When installing the valve, clean the inner chamber and sealing surface, tighten the connecting bolts evenly, and ch...