[KongchangAI]
Unverified88% confidenceDecision RuleTime unknown

无回水管改造的住宅应选用带单向阀的三通旁通阀(利用冷水管回流),管路总长超过25米或跨楼层时优先选择独立回水管方案,否则等待时间仍无法降到10秒内

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88%
Confidence
Long-term
Relevance
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