The application Tee internal thread ball valve

    Currently used in weak current control of the pilot valve (the pilot valve is different from the stated earlier large diameter valves), whether the electromagnetic type, or electric machines, the principle on to weak current driven pilot valve valve sealing pressure cavity pressure (both pressure cavity), in order to achieve the use of water pressure in the piping will be the main valve (described earlier large diameter valve main body) or valve seal on purpose, in the same way, it is also through the closed pressure cavity, in order to achieve the purpose of using cavity pressure will be the main valve closed. But in the actual use of our water supply pipeline, has been due to long time water quality issues within the pilot valve guide hole blockage, pressure release valve stem adsorption iron particles or tiny grains of sand were jammed valve stem, plus some designers lack of practical experience, to the scene situation forecast is insufficient, in the design phase, the valve drive circuit and control software design flaws, cause this kind of valve in the long-term work of the high failure rate.