活塞式減壓閥
該類型的減壓閥集兩種閥―導閥和主閥―于一體。導閥的設計與直接作用式減壓閥類似。來自導閥的排氣壓力作用在活塞上，使活塞打開主閥。如果主閥較大，無法直接打開時，這種設計就會利用入口壓力打開主閥。因此，這種類型的減壓閥，與直接作用式減壓閥相比，在相同的管道尺寸下，容量和精確度（+/-5%）更高。與直接作用式減壓閥相同的是，減壓閥內部感知壓力，無須外部安裝傳感線。
3.3 （三）薄膜式減壓閥
DBW10B-1-50B/2006CW220-50N9Z5L DBW10B-1-50B/2006CG24N9Z5L
DBW20A-1-50B/2006CW220-50N9Z5L DBW20A-1-50B/2006CG24N9Z5L
DBW20A-2-50B/2006CW220-50N9Z5L DBW20A-2-50B/2006CG24N9Z5L
DBW20B-1-50B/2006CW220-50N9Z5L DBW20B-1-50B/2006CG24N9Z5L
DBW30A-1-50B/2006CW220-50N9Z5L DBW30A-1-50B/2006CG24N9Z5L
DBW30A-2-50B/2006CW220-50N9Z5L DBW30A-2-50B/2006CG24N9Z5L
DBW30B-1-50B/2006CW220-50N9Z5L DBW30B-1-50B/2006CG24N9Z5L
Z2S6-40B/ Z2S6A-40B/ Z2S6B-40B/
Z2S10-1-30B/ Z2S10-3-30B/ Z2S10A1-30B/ Z2S10A3-30B/
Z2S10B1-30B/ Z2S10B3-30B/
DR6DP1-50B/25Y DR6DP1-50B/75Y DR6DP1-50B/150Y DR6DP1-50B/210Y
DR6DP1-50B/25YM DR6DP1-50B/75YM DR6DP1-50B/150YM DR6DP1-50B/210YM
DR20-6-50B/50Y DR20-6-50B/100Y DR20-6-50B/200Y DR20-6-50B/315Y
DR20-6-50B/50YM DR20-6-50B/100YM DR20-6-50B/200YM DR20-6-50B/315YM
4WE10P31B/CG24N9Z5L 4WE10P31B/CW220-50N9Z5L
4WE10Q31B/CG24N9Z5L 4WE10Q31B/CW220-50N9Z5L
4WE10R31B/CG24N9Z5L 4WE10R31B/CW220-50N9Z5L
HED8OH15B/50Z14L24S HED8OH15B/100Z14L24S HED8OH15B/350Z14L24S
HED8OH15B/50Z14L110S HED8OH15B/100Z14L110S HED8OH15B/350Z14L110S
