应该安装一个测试和压力安全阀，确保内部压力能够在维修前得到释放，并作为疏水阀工作的直观显示。
A test and pressure relief valve should be installed to assure relief of internal pressure prior to servicing and as a visual indication of trap operation.
介绍了安全阀铁心磁性能测试系统的结构、测量原理。系统软件界面设计。
This paper introduced that the structure, testing principle and boundary design of the system software for test system of the performance core of security valve.
介绍了安全阀铁心磁性能测试系统的结构、测量原理、系统软件界面设计。
The structure, testing principle and boundary design of the system software for test system of the performance core of security valve are introduced in this paper.
要求而且有必要每年一次检查所有安全阀和控制阀。定期检查、测试和清洗能够保证最长的使用寿命和正常的产品功能。
Annual inspection of all safety and control valves is required and necessary. Regular inspection, testing and cleaning assures maximum life and proper product function.
这对安全阀性能测试具有技术和实际意义。
It has technical and practical significance for performance test.
这对安全阀性能测试具有技术和实际意义。
It has technical and practical significance for performance test.
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