輸水管線高處或較長輸水管線在停電或停泵過程中常因壓力降低而產(chǎn)生水柱分離，為保護管線可以加裝空氣閥?？諝忾y有時候也叫排氣閥或者叫進氣閥。在泵站的壓力水箱高點及各輸水管路上的安裝空氣閥，用于輸水管路初期充水、管路定期檢修后充水時將輸水管道內(nèi)的空氣往外排出，避免壓力波動；在輸水管道產(chǎn)生水錘出現(xiàn)負壓時，空氣閥開啟，令管道外空氣進入管道，以免在管道內(nèi)因壓力或溫度變化而使溶于水中的空氣放釋放出來時，空氣閥將其及時排出，防止管道中形成氣囊而影響管道系統(tǒng)的運行。

High water line or long water pipeline in a power outage or stop the pump pressure is reduced because the process often produce water column separation, the pipeline can be installed to protect the air valve. Sometimes called air vent valve or call the intake valve. High pressure tank pumping station on the road and all pipes installed air valve for the initial water pipes filled with water, regular maintenance after the pipeline filled with water when the air is discharged out of water inside the tubes, to avoid pressure fluctuations; in when the aqueduct water hammer occurs negative pressure air valve is open, so the pipe outside air into the pipes, the pipes in order to avoid internal pressure or temperature changes resulting from the discharge of air dissolved in the water when released, the air valve to be discharged in time to prevent pipeline and affecting the operation of the airbag is formed piping system.

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