3系列閥有電磁閥和氣控閥兩種，接口有G1/8,G1/4,。
可提供二位三通、二位五通、三位五通和雙二位三通。
334型二位三通閥，G1/4"
334-011-02,334-015-02,334-033,334-035,334-E11-02,334-E15-02,
334D-015-02,334D-035,334D-E15-02
338型二位三通閥，G1/8"
338-011-02,338-015-02,338-033,338-895,338-896,338-897,338-900,
338-905,338-910,338-915,338-945,338-955,338-965,338-975,338-976,
338-977,338-990,338-D15-9A5,338D-015-02,338D-035,338L-011-02,
338L-015-02,338L-033,338L-035
344型二位三通閥，G1/4"
344-015-02,344-E15-02,344D-015-02,344D-035,344D-E15-02
348型二位三通閥，G/8"
348-015-02,348-D15-9A5,348D-015-02,348D-035,348D-E15-02,348L-015-02
354型二位五通閥，G1/4"
354-011-02,354-015-02,354-033,354-035,354-E11-02,354-E15-02,354N-925
358型二位五通閥，G1/8"
358-011-02,358-015-02,358-033,358-035,358-895,358-896,358-897,358-900,
358-905,358-910,358-915,358-945,358-955,358-965,358-975,358-976,358-977,
358-990,358-D15-9A5,358-E11-02,358-E15-02
364型三位五通閥（中封），G1/4"
364-011-02,364-033,364-E11-02
368型三位五通閥（中封），G1/8"
368-011-02,368-033,368-900,368-905,368-E11-02
374型三位五通閥（中泄），G1/4"
374-011-02,374-033,374-E11-02
378型三位五通閥（中泄），G1/8"
378-011-02,378-033,378-900,378-905,378-E11-02
384型三位五通閥（中壓），G1/4"
384-011-02,384-033,384-E11-02
388型三位五通閥（中壓），G1/8"
388-011-02,388-033,388-E11-02
394型雙二位三通閥（1NC），G1/4"
394D-015-02,394D-035,394D-E15-02,394D-015-02
398型雙二位三通閥（1NC），G1/8"
398D-015-02,398D-035,398D-E15-02