日本DAIKIN單向閥（JCP-G06-20-20）本閥為用于減壓閥SGB-G03的單向閥。應疊裝在SGB-G03的下方使用。DAIKIN單向閥又稱止回閥或逆止閥。用于液壓系統中防止油流反向流動,或者用于氣動系統中防止壓縮空氣逆向流動。單向閥有直通式和直角式兩種。直通式單向閥用螺紋連接安裝在管路上。直角式單向閥有螺紋連接、板式連接和法蘭連接三種形式。液控單向閥也稱閉鎖閥或保壓閥，它與單向閥相同，用以防止油液反向流動。但在液壓回路中需要油流反向流動時又可利用控制油壓，打開單向閥，使油流在兩個方向都可流動。液控單向閥采用錐形閥芯，因此密封性能好。在要求封閉油路時，可用此閥作為油路的單向鎖緊而起保壓作用。液控單向閥控制油的泄漏方式有內泄式和外泄式二種。在油流反向出口無背壓的油路中可用內泄式；否則需用外泄式，以降低控制油壓力。
大金先導單向閥/方向控制閥常見熱銷型：
JCP-G03-04-20 JCP-G03-04-20-Z JCPD-G03-04-20 JCPD-G03-04-20-Z
JCP-G03-20-20 JCP-G03-20-20-Z JCPD-G03-20-20 JCPD-G03-20-20-Z
JCP-G03-35-20 JCP-G03-35-20-Z JCPD-G03-35-20 JCPD-G03-35-20-Z
JCP-G03-50-20 JCP-G03-50-20-Z JCPD-G03-50-20 JCPD-G03-50-20-Z
JCP-T03-04-20 JCP-T03-04-20-Z JCPD-T03-04-20 JCPD-T03-04-20-Z
JCP-T03-20-20 JCP-T06-20-20-Z JCPD-T06-20-20 JCPD-T06-20-20-Z
JCP-T03-35-20 JCP-T06-35-20-Z JCPD-T06-35-20 JCPD-T06-35-20-Z
JCP-T03-50-20 JCP-T06-50-20-Z JCPD-T06-50-20 JCPD-T06-50-20-Z
JCP-G06-04-20 JCP-G06-04-20-Z JCPD-G06-04-20 JCPD-G06-04-20-Z
JCP-G06-20-20 JCP-G06-20-20-Z JCPD-G06-20-20 JCPD-G06-20-20-Z
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JCP-F06-20-20 JCP-F06-20-20-Z JCPD-F06-20-20 JCPD-F06-20-20-Z
JCP-F06-35-20 JCP-F06-35-20-Z JCPD-F06-35-20 JCPD-F06-35-20-Z
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JCP-F06-50-20 JCP-F06-50-20-Z JCPD-F06-50-20 JCPD-F06-50-20-Z
JCP-G10-04-20 JCP-G10-04-20-Z JCPD-G10-04-20 JCPD-G10-04-20-Z
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JCP-F10-04-20 JCP-F10-04-20-Z JCPD-F10-04-20 JCPD-F10-04-20-Z
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JCP-F10-35-20 JCP-F10-35-20-Z JCPD-F10-35-20 JCPD-F10-35-20-Z
JCP-F10-50-20 JCP-F10-50-20-Z JCPD-F10-50-20 JCPD-F10-50-20-Z
JCP-F16-04-20 JCP-F16-04-20-Z JCPD-F16-04-20 JCPD-F16-04-20-Z
JCP-F16-20-20 JCP-F16-20-20-Z JCPD-F16-20-20 JCPD-F16-20-20-Z
JCP-F16-35-20 JCP-F16-35-20-Z JCPD-F16-35-20 JCPD-F16-35-20-Z
JCP-F16-50-20 JCP-F16-50-20-Z JCPD-F16-50-20 JCPD-F16-50-20-Z
日本DAIKIN單向閥（JCP-G06-20-20）
