Although the all-welded ball valve adopts the upstream and downstream double seat partition seal, the long-term operation of the seat is inevitable wear;
全焊接球阀虽采取上下游双阀座隔断密封，但长期运行的阀座不可避免山现磨损；
When the valve is closed, the upper fly seat may have a certain internal leakage, and the internal leakage medium enters the valve ball cavity.
当阀门处于关闭状态时，上蝣阀座可能会出现一定的内漏，内漏的介质进入阀球中腔。
The downstream seat with special juice can effectively avoid the overpressure of the valve ball ten cavities. Once the pressure of the valve chamber exceeds the downstream pressure of about 138KPa, the downstream reading seat will be pushed away from the ball, so that the pressure will be released into the downstream pipeline.
特殊设汁的下游阀座可有效避免阀球十腔超压，一旦阀腔压力超过下游压力约138KPa时，会将下游阅座推离球体，使压力泄放到下游管道中。
All welded ball valve manufacturers valve parts cleaning: install fluid pipeline control valve, the inner cavity must be clean.
全焊接球阀厂家阀门零件的清洗：安装流体管路把持阀门，内腔必需干净。
In particular, the valves used in nuclear power, medicine, and food industries are strictly required to ensure the purity of the medium and avoid medium infection.
特殊是核电、医药、食物产业用阀门，为保障介质的纯度和避免介质传染，严厉要求阀门内腔干净度。
