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暖气阀门先开进水还是先开回水_家居日记
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暖气阀门先开进水还是先开回水

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暖气阀门先开进水还是先开回水 开回水阀，先旋开回水阀，让暖气系统内的空气顺利排出。然后再开进水阀，待注水畅通就能正常供暖了。反之如果先开进水阀，会造成管道压力增


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