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TOYOOKI電磁閥HB3H-A-D4K-06型：HB3H-A-D4K-06型TOYOOKI電磁閥，當入口處壓力加大時，自動減小通徑，減少流量的變化，反之亦然。如果反接，這套調節系統就不起作用。

而且起調節作用的閥片，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。

HF3H-A-40K-025B
HF3H-A-80K-03
HK3H-A-Y4-025B
HK3H-A-Y1-03
HF3H-B-K106K-06
HF3H-BY-K24K-025B
HF3H-B-190K-06
HK3H-B-Y2-06
HK3H-W-Y3-025B
HK3H-W-Y4-025B
HK3H-A-Y2-03
HK3H-B-Y3-025B
HK3H-B-Y4-025B
HW3H-B-13-025B
HF3H-B-40K-025B
HF3H-WY-80K-03
HF3H-WY-190K-06
HF3H-P-190-06
HF3H-W-K6K-025B
HW3H-B-12-025B
HK3H-B-W3-03
HF3H-AY-40K-025B
HK3H-B-W4-03
HF3H-P-40-025B
HF3H-BY-190K-06
HF3H-W-40K-025B
HF3H-W-80K-03
HF3H-WY-40K-025B
HF3H-R-40-025B
HK3H-B-W3-06
HK3H-B-W4-06
HK3H-W-V0-025B
HF3H-BY-K6K-025B
HK3H-B-Y1-03
HF3H-AY-80K-03
HF3H-AY-190K-06
HK3H-W-Y1-03
HK3H-W-Y2-03
HF3H-BY-K56K-03
HK3H-W-Y2-06
HK3H-A-W1-025B
HF3H-W-K24K-025B
HF3H-W-K6K-025B
HF3H-W-K24K-025B
HF3H-BY-K106K-06
HK3H-A-Y1-06
HK3H-A-Y2-06
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HF3H-BY-40K-025B
HK3H-W-Y1-06
HK3H-B-Y2-03
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HF3H-A-190K-06
HF3H-B-80K-03
HK3H-B-W1-06