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分析了泄压安全阀在采用补水泵定压的低温热水供暖系统中的作用，给出了选择安全阀的计算方法和数据，并指出了安全阀安装、使用中应注意的事项。
The role of the pressure relief safety valve in the low temperature hot water heating system with the constant pressure of the make-up water pump was analyzed. The calculation method and data of the selective safety valve were given, and the matters that should be paid attention to when installing and using the safety valve were pointed out.