清洗阀 meaning in English

clearing valve
purge valve

Clean exposed portion of valve stem ( do not scratch )
清洗阀杆的外露部分（不要划伤）。
Lift entire top work clear of body
将这个顶部提起，清洗阀体。
Grind the body sealing ring or replace the body sealing ring an clear the internal cavity
研磨阀体密封圈或更换阀体密封圈，清洗阀体内腔。
Loading tension force for supply and takingup unit , openning purge valve ( spray valve and gun valve ) and starting the cleaning buttom
加载供线及收线系统张紧力，打开清洗阀（喷洗阀及枪阀），启动清洗按键。