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HB3H-A-D4K-06型豐興電磁閥：HB3H-A-D4K-06型TOYOOKI電磁閥，當(dāng)入口處壓力加大時，自動減小通徑，減少流量的變化，反之亦然。如果反接，這套調(diào)節(jié)系統(tǒng)就不起作用。而且起調(diào)節(jié)作用的閥片，是有方向性的，反向的壓力甚至可以減少甚至封閉流量。 既然安裝平衡閥是為了更好的供暖，就不存在反裝的問題。

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