NORTHMAN叠加式平衡阀部分常规型号参考：MCS-02A-1-20 , MCS-02A-2-20 , MCS-02A-3-20 , MCS-02A-K-1-20 , MCS-02A-K-2-20 , MCS-02A-K-3-20 , MCS-02B-1-20 , MCS-02B-2-20 , MCS-02B-3-20 , MCS-02B-K-1-20 , MCS-02B-K-2-20 , MCS-02B-K-3-20 , MCS-03A-1-20 , MCS-03A-2-20 , MCS-03A-3-20 , MCS-03A-K-1-20 , MCS-03A-K-2-20 , MCS-03A-K-3-20 , MCS-03B-1-20 , MCS-03B-2-20 , MCS-03B-3-20 , MCS-03B-K-1-20 , MCS-03B-K-2-20 , MCS-03B-K-3-20 , MCS-04A-1-20 , MCS-04A-2-20 , MCS-04A-3-20 , MCS-04A-K-1-20 , MCS-04A-K-2-20 , MCS-04A-K-3-20 , MCS-04B-1-20 , MCS-04B-2-20 , MCS-04B-3-20 , MCS-04B-K-1-20 , MCS-04B-K-2-20 , MCS-04B-K-3-20