balance hole meaning in Chinese

平衡孔

This model of valve overcomes such defects with the motor valve , piston - type electromagnetic valve as the post - wear defective closure due to the mechanical movement , the soft membrane full of elasticity , the balance hole can not close water because the foreign matters and mud sand accumulate and block it up etc . , the highly effective use of the unique circuit greatly raises the reliability of the switch , extensively used for ic card watermeter , infrared induced sanitary utensils , etc
Fck - 118 ：进水口出水口为1寸25内螺纹该型阀克服了如电机阀活塞式电磁阀机械运动磨损后的关闭不良。软性膜片富有弹性，平衡小孔不会因杂质与泥沙的淤积堵塞使其关不住水，独特线圈磁路的高效利用大大提高了阀开关可靠性，广泛用于ic卡水表红外线感应洁具等自动控水系统。