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  • 1. Adhere to the correct installation technology. Always follow the installation instructions and points of attention of the manufacturer of the control valve (regulating valve). A brief summary of the typical installation instructions is provided he……
    Oct 12
    2018
  • 1, bellows cut-off valve only allow one-way flow, installation is directional. Its structure length is larger than the gate valve, while the fluid resistance is large, long-term operation, sealing reliability is not strong.……
    Oct 12
    2018
  • Check valve refers to rely on the flow of the media itself and automatic open, closed disc, used to prevent the return of the medium of the valve, also known as the reverse check valve, one-way valve, countercurrent valves, and back pressure valve. ……
    Oct 12
    2018
  • Electric butterfly valve According to the structure can be divided into the electric centerline seal butterfly valve, electric double eccentric butterfly valve, electric three eccentric butterfly valve, electric rubber lined butterfly valve……
    Oct 12
    2018
  • 1, the ambient temperature should be controlled within the -25℃-70℃. 2, the valve body selection has L-type and T-type……
    Oct 12
    2018
  • 1, hard seal butterfly valve main control parameters for the specification size. 2, hard seal butterfly valve for single-plate air valve, its simple structure, convenient processing, low cost, easy to operate, but the adjustment accuracy is poor, ……
    Oct 12
    2018
  • 1, the sealing surface processing quality is not good. The main performance in the sealing surface of cracks, pores and slag and other defects, is due to the improper selection of surfacing and heat treatment and the process of surfacing and heat tre……
    Oct 12
    2018
  • 1, telescopic flange butterfly valve must be flat before installation, do not arbitrarily bump; 2, telescopic flange butterfly valve Factory structure length is the minimum length, installation, pull to the installation length (that is, design……
    Oct 12
    2018
  • 1, the valve stem diameter allowable value Lift lever VALVE Select electric device should pay attention to its allowable valve stem diameter value, the stem diameter must be less than this value. In addition, for multi-turn electric device, in the se……
    Oct 12
    2018
  • 1. In high temperature and high pressure conditions, still has a stable sealing performance. Its special sealing system guarantees high sealing performance from ultra-low to ultra-high temperatures at all temperature ranges……
    Oct 12
    2018
  • Electric control valve is also not without defects: the heat generated by the motor operation will lead to thermal protection, so that the control valve to stop working;……
    Oct 12
    2018
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