当线圈通电（电压规格有ac380v、ac220v或dc220v、dc24v等）时，衔铁及托板被铁心吸引而瞬时下移，使瞬时动作触点接通或断开。但是活塞杆和杠杆不能同时跟着衔铁一起下落，因为活塞杆的上端连着气室中的橡皮膜，当活塞杆在释放弹簧的作用下开始向下运动时，橡皮膜随之向下凹，上面空气室的空气变得稀薄而使活塞杆受到阻尼作用而缓慢下降。经过一定时间，活塞杆下降到一定位置，便通过杠杆推动延时触点动作，使动断触点断开，动合触点闭合。从线圈通电到延时触点完成动作，这段时间就是继电器的延时时间。延时时间的长短可以用螺钉调节空气室进气孔的大小来改变。

吸引线圈断电后，继电器依靠恢复弹簧的作用而复原。空气经出气孔被迅速排出。

台湾WILSHEN伟圣凸输行程换向阀

DCG系列凸输行程换向阀部分型号：

DCG-02-2BC-10-R    DCG-02-2BO-10-R

DCG-02-2BC-10-S    DCG-02-2BO-10-S

DCG-02-2BC-10-Y    DCG-02-2BO-10-Y

DCG-02-2B2-20-R    DCG-02-2B2S-20-R

DCG-02-2B2-20-S    DCG-02-2B2S-20-S

DCG-02-2B2-20-Y    DCG-02-2B2S-20-Y

台湾WILSHEN伟圣满油阀

PF系列满油阀部分型号：

PF-50-20-FPT    PF-80-20-FPT    PF-90-20-FPT

PF-100-20-FPT    PF-125-20-FPT    PF-150-20-FPT

PF-50-20-FT    PF-80-20-FT    PF-90-20-FT

PF-100-20-FT    PF-125-20-FT    PF-150-20-FT

PF-50-20-FP    PF-80-20-FP    PF-90-20-FP

PF-100-20-FP    PF-125-20-FP    PF-150-20-FP

台湾WILSHEN伟圣单向阀

CPD系列释压型液控单向阀部分型号：

CPDG-03-05-E-10-FPT    CPDT-03-05-E-10-FPT    CPDF-03-05-E-10-FPT

CPDG-06-05-E-10-FPT    CPDT-06-05-E-10-FPT    CPDF-06-05-E-10-FPT

CPDG-10-05-E-10-FPT    CPDT-10-05-E-10-FPT    CPDF-10-05-E-10-FPT

CPDG-03-50-E-10-FPT    CPDT-03-50-E-10-FPT    CPDF-03-50-E-10-FPT

CPDG-06-50-E-10-FPT    CPDT-06-50-E-10-FPT    CPDF-06-50-E-10-FPT

CPDG-10-50-E-10-FPT    CPDT-10-50-E-10-FPT    CPDF-10-50-E-10-FPT

CPDG-03-05-E-10-FT    CPDT-03-05-E-10-FT    CPDF-03-05-E-10-FT

CPDG-06-05-E-10-FT    CPDT-06-05-E-10-FT    CPDF-06-05-E-10-FT

CPDG-10-05-E-10-FT    CPDT-10-05-E-10-FT    CPDF-10-05-E-10-FT

CPDG-03-50-E-10-FT    CPDT-03-50-E-10-FT    CPDF-03-50-E-10-FT

CPDG-06-50-E-10-FT    CPDT-06-50-E-10-FT    CPDF-06-50-E-10-FT

CPDG-10-50-E-10-FT    CPDT-10-50-E-10-FT    CPDF-10-50-E-10-FT