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【Daily Question】Utilities - HVAC - 20190727

2019-07-27View Original

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This post was last edited by hesonchang214 on 2019-7-29 08:35. The diaphragm of the internal balance expansion valve is subjected to the pressure Pg of the temperature-sensitive working fluid, the evaporation pressure Po, and the spring equivalent pressure Pw; when these three forces are not in balance, Pg

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