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。

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High viscosity pump can match the relief valve, when the pump and piping system overpressure, safety valve is opened, the formation of internal reflux, ensure the safety of the system.

高粘度泵可配安全阀，当泵或管路系统超压时，安全阀门打开，形成内部回流，保证系统安全。

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Precipitation of, at the same time, USES the special relief valve to keep the battery internal pressure.

的析出，同时，采用特制安全阀使电池保持一定的内压。

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