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.
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。
The specifications for seat sealing test, body sealing test, body strength test, valve long term test, fatigue strength test and operation torque of plastic valves were summarized.
汇总了塑料阀门产品所需性能要求的阀座密封试验、阀体密封试验、阀体强度试验、阀门长期试验、疲劳强度试验和操作扭矩的规定。
The specifications for seat sealing test, body sealing test, body strength test, valve long term test, fatigue strength test and operation torque of plastic valves were summarized.
汇总了塑料阀门产品所需性能要求的阀座密封试验、阀体密封试验、阀体强度试验、阀门长期试验、疲劳强度试验和操作扭矩的规定。
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