portable hydrant meaning in English

移动式消防龙头
移动式消防栓

Model 994blt portable hydrant backflow preventer is designed and manufactured to provide long - term service with minimal maintenance
型号994blt移动式消防栓防回流阀的设计和制造理念就是为用户提供长期的使用寿命和最少的维护工作。
Model 994blt portable hydrant backflow preventer meets the design requirements of most national standards . due to the portability of the unit , there are no national approvals available
型号994blt移动式消防栓防回流阀满足大多数美国国家标准的设计要求。由于这种装置的移动性，所以目前没有可使用的美国国家认证。
Model 994blt portable hydrant backflow preventer is for use in protection of potable water from a fire hydrant or other nonpermanent installation where flow is in one direction only and the possibility of a cross - connection exists
型号994blt移动式消防栓防回流阀适用于保护饮用水系统不会受到消防栓或其他流向只是单向或存在交叉连接可能的临时性安装的应用场合。