求翻译：金牛JNQH系列切换阀是在一个工位安装二个同规格的安全阀，其中一个在线运行进行超压保护，另一个作为备件，当在线运行的安全阀需要维修时，由切换阀把作为备件的安全阀切换至运行状态，保证设备或装置上使终有安全阀参与超压保护，面不必停车维修，减少停车带来的经济损失。法兰标准按ANSI B16.5或用户指定的标准。是什么意思？

The Taurus jnqh series switching valve is in a position with the specifications of the safety valve to install two one-line operation for overpressure protection, and another as a spare when the online operation of the safety valve in need of repair, the switching valve as spare parts safety valve t

Golden cow JNQH series switch valve is in a position to install the 2 specifications of the relief valve, one of the online running over-pressure protection and the other one as a spare part in the running of the relief valve line when maintenance is required, the switch valve as a spare part of the

正在翻译，请等待...

Taurus JNQH series switch valve is in a a station installed II a with specifications of safety valve, which a online run for Super pressure protection, another as spare parts, dang online run of safety valve needs maintenance Shi, by switch valve to as spare parts of safety valve switch to run State

The golden cow JNQH series cut valve is installs two same specifications in a location the safety valves, online movement carries on the overpressure protection, another achievement spare parts, when the online movement safety valve needs to service, by cuts the valve to take the spare parts the saf