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。活塞杆和杠杆不能跟着衔铁一起下落，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