Of large air-conditioning system, using the manual control valve regulating the complex process of manually adjusting the front-end valves, back-flow will be affected.
对大型空调系统而言，采用手动调节阀调节过程复杂，手动调节前端阀门，后端流量会受影响。
Lifting control valve is the control center of hydraulic lifting system of dumpers, which is classified into electromagnetic type, electro-hydraulic type, manual type and air-powered type, etc.
举升操纵阀是自卸汽车液压举升系统的控制中心，该操纵阀分为电磁式、电液式、手动式和气动式等几种。
Manual valve, filter F56F embellish of new water treatment control valve series products have suc c essfully passed the world awareness of the highest NSF approval!
手动过滤阀F56F，润新水处理控制阀系列产品已顺利通过了世界上认知度最高的NSF认证！
Manual valve, filter F56F embellish of new water treatment control valve series products have suc c essfully passed the world awareness of the highest NSF approval!
手动过滤阀F56F，润新水处理控制阀系列产品已顺利通过了世界上认知度最高的NSF认证！
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