service valve meaning in Chinese

操作阀
辅助阀
工作阀门
供气分喉阀
检修阀

Specification for servicing valves copper alloy for water services
供水设备用供水阀门
Oxygen service valves are available , consult factory
可提供氧气应用阀门，请咨询工厂。
Air - conditioning service valve
空调截止阀
Connector of service valve
维修阀接口
Valves for potable water supply in buildings - angle service valves - requirements and tests
建筑物饮用水供水阀.角辅助阀.要求和试验

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